Wang Zhizhan, The Ninth Floor of North Star Times Tower, 8 Beichen East Road, Chaoyang District, Beijing, 100101, China

Thinking on the development and application of rock pyrolysis logging technology. Fang Xixian. Mud Logging Engineering, 2018, 29(1): 4-8

In addition to the evaluation of organic matter abundance, organic matter type, organic matter maturity, determination of hydrocarbon generation potential, shale oil and gas constituency, stratum selection, section selection, etc., rock pyrolysis logging has the advantages of rapid analysis, real-time, quantitative, unaffected by the properties of formation water, and the unique advantages in the identification and evaluation of low-porosity and low-permeability reservoirs, complicated reservoirs, special hydrocarbon component oil layer, low-resistivity and low-level hydrocarbon show layers. It also has a certain value in evaluating the physical properties and judging the oiliness of the reservoir. However, with the deepening of exploration and development and the extensive application of advanced drilling technologies, such as horizontal wells and PDC bits, rock pyrolysis logging shows that the analysis speed can not keep up with the drilling speed, the cuttings are fine, picking samples is difficult, the temperature of organic carbon analysis is low, the interpretation and evaluation conclusions can not meet the needs of party A and other problems. In response to these problems, proposals were made for improving high-temperature organic carbon analyser, the development of a new oil reservoir rock special analyser of single-machine multi-furnace, integrated analysis of rock and fluid, fine interpretation and evaluation and the expansion of rock pyrolysis logging applications.

Key words:rock pyrolysis logging, special reservoir, high-temperature organic carbon, oiliness, expansion, rock-fluid integration, oil reservoir rock

Fang Xixian, Mud Logging Company of Sinopec North China Petroleum Engineering Co., Ltd. , Daqing Road, Nanyang City, Henan Province, 473132, China

Application value analysis of micro bit in mud logging engineering. Li Jian, Cao Pengfei and Zhang Changjun. Mud Logging Engineering, 2018, 29(1): 9-12

Cuttings are the material basis for many mud logging operations. The ability to get representative cuttings with a certain volume and weight is a prerequisite for the success of these mud logging projects. With the large-scale promotion of PDC bit, it is difficult to obtain large-scale cuttings that can meet the requirements. Traditional drilling coring and sidewall coring are not only poor timeliness, but also high cost. In order to obtain larger size and high-quality cuttings during the drilling process, furthermore, some mud logging methods can be used to accurately evaluate the lithology and fluid of the formation. By consulting domestic and foreign literature and new technical data, a new type of micro-bit was found, which can continuously produce larger-sized micro-core during the normal drilling. Theoretically, it can meet the needs of the operations of special oil reservoirs, such as fluorescence logging and nuclear magnetic resonance logging. It can also significantly improve ROP and reduce drilling cost. It has good application value.

Control method on horizontal well landing point in Daqing Oilfield. Sun Baogang and Li Guoming. Mud Logging Engineering, 2018, 29(1): 19-21

a、由于下层挡板主要作用是促使煤粉气流产生初级旋流，而现有上层挡板部分或大部分处于全开位置，当煤粉气流进入上层挡板后，上层挡板不但没有起到增加旋流强度的作用，反而起到了降低旋流强度的均流板作用，从而使得煤粉气流旋流强度降低，沿分离器轴向运动，分离效果变差，因此即使下层挡板在较大范围内调整，而当煤粉气流通过上层挡板后，旋转强度显著降低且与调整前后变化不大，从而造成分离器挡板在较大范围内调整时煤粉细度变化较小；

Li Jian, Room A4012, 3168 Hou Haibin Road, Nanshan District, Shenzhen City, Guangdong Province, 518000,China

Study on mud logging matching technology for tight oil of horizontal wells in southern Songliao Basin. Yang Guangzhao. Mud Logging Engineering, 2018, 29(1): 13-18

The tight oil reservoirs in the southern Songliao Basin are mainly distributed in Fuyu oil layer. The porosity and permeability of the reservoirs are low, and they have typical characteristics of tight oil layer. In order to achieve effective production capacity, the mode of horizontal well must be developed. At present, the conventional mud logging acquisition methods are affected by many factors and provide fewer parameters. It is difficult for the later interpretation and evaluation. In response to the above problems, through the improvement on the conventional mud logging techniques, the addition of laboratory analysis methods of mud logging, and the improvement of horizontal well geosteering technology, a set of mud logging fine evaluation methods and standards based on mud logging data, such as cuttings, gas logging and laboratory analysis, were established by combining with well logging and regional oil test data of tight oil horizontal wells. The application practice in 12 tight oil horizontal wells in southern Songliao Basin showed its compliance rate of comprehensive interpretation was 94.6%, which provided a strong basis for the exploration and development of tight oil horizontal well in the southern Songliao Basin.

Key words:oily type, heavy oil, medium oil, light weight oil, main peak carbon, (S0+S1)/S2, ∑C21-/∑C22+

Key words: tight oil, horizontal well, matching technology, mud logging acquisition, fine evaluation

Yang Guangzhao, 789 Youth Street, Songyuan City, Jilin Province, 138000, China

Key words:cuttings size, coring, fluorescence logging, nuclear magnetic resonance logging, aging, cost, micro-bit, micro- core

During the control of the horizontal well landing point, stratigraphic dip has great influence on the stratum thickness behind the straightening of the inclined depth, which not only influences the selection of the marker bed, but also affects the accuracy of the prediction of the landing point depth. In order to solve this problem, a method of controlling the landing point of horizontal wells in Daqing Oilfield was established with the contrast mode of the apparent vertical thickness as the core. The key content of the method is: through the apparent vertical thickness contrast mode of real drilling, the formation is compared with the neighboring wells after real reduction, selecting the marker bed and calculating the inclination angle, selecting the appropriate prediction formula to gradually calculate the vertical depth of the landing point according to stratigraphic dip calculated by the apparent vertical thickness mode. By combining mud logging data while drilling, the trajectory landing can be determined timely and the dead area of the log can be made up. In the first half of 2017, the application of more than 30 horizontal wells showed that the technology had significant effects and the average target successful rate reached 97.2%.

Key words:horizontal well, landing point, stratigraphic dip, apparent vertical thickness, vertical depth

Sun Baogang, No.1 Data Acquisition Team, No.1 Geo-Logging Company, Cheng′er Village, Ranghulu District, Daqing City, Heilongjiang Province, 163000, China

Gas well management method in block S 11 of Sulige gas field. Su Weiming, Liu Yulong, Li Xinmeng, Guo Zhiqiang, Han Huichao，Jia Ran，Xu Jice and Sun Yongchao. Mud Logging Engineering, 2018, 29(1): 22-28

4.竭力做好陶瓷文化旅游产业发展服务。景德镇积极支持符合条件的陶瓷文化旅游园区景区申报全国旅游景区质量等级评定评级，做强陶瓷文化旅游产业企业主体，引进国内外知名旅游企业参与旅游资源开发，完善陶瓷文化旅游产业链，协同周边景区景点，优化旅游线路。加强旅游立体交通网、旅游服务设施网、“智慧智能”旅游互联网等配套建设，完善住宿、娱乐等基础设施，加强旅行社和导游队伍专业化服务建设，完善旅游综合服务功能，全面提升陶瓷文化旅游产业发展水平。

The reservoir in block S 11 of Sulige gas field is characterized by low permeability, low pressure and low abundance. There are many gas wells in the block with low average single well output, and the water yielding phenomenon generally occurs in production. Therefore, the overall management of the gas well is proposed. At the same time, more refined gas well classification is required for providing reasonable and scientific basis for gas well management in block S11. According to the characteristics of well production, the gas wells are divided into normal production stage, water yielding stage and intermittent opening production stage. The gas wells are subdivided into 9 categories based on static classification, and corresponding management measures for each kind of well are proposed. In the normal stage, the stable production period can be prolonged by the rational and regular adjustment of proration measures and the recovery of short-term well shut-in. After making rational drainage and gas recovery measures for water yielding wells in the water yielding stage, a substantial increase in production can be realized. In the intermittent well opening stage, through the optimization of the intermittent well opening system, water displacement and gas recovery process measures, production can be resumed as soon as possible, the wells can be put into production, the sustainable and stable development of the block can be ensured.

Key words:block S 11, fine management, gas well classification, water displacement and gas recovery, intermittent well opening system

他忍不住向前迈出了一步。那金色光芒随即向前轻轻游弋起来，看上去又像一只轻盈的蝴蝶，轻柔地舞动着翅膀向前方飞行，指引着他走向另一个展馆。

Su Weiming, CNPC Greatwall Drilling Company,Panjin City, Liaoning Province, 124010,China

Method of forecasting overflow with comprehensive mud logging parameters during drilling. Zhang Shiming, Zhang Ling, Yue Jun, Chen Deyong, He Yuxia, Han Xiaoqiang, Liu Xiaochen and Li Dongmei. Mud Logging Engineering, 2018, 29(1): 29-33

In order to study the application of comprehensive mud logging parameters to the prediction method of overflow during drilling, based on the knowledge of the correlation between comprehensive mud logging parameter anomalies and engineering anomaly types, the forecasting method for the overflow during drilling was summarized as follows: bit→ wellbore → drilling fluid outlet → pit volume. Through the analysis of real-time charts of engineering anomalies that had occurred on the site, comprehensive observations of parameters changes in drilling time, hook weight, weight on bit, rotary torque, rotary speed, standpipe pressure and pump stroke rate are performed to determine whether drilling into the reservoir or abnormal high pressure transitional zone. With analysis of the variation of hook weight,standpipe pressure, pump stroke rate, outlet flow rate and total pit volume, it is necessary to determine whether or not the well intrusion occurs after drilling the reservoir and the abnormal high pressure transitional zone. When the drilling fluid property changes slightly, it is indicated that the amount of formation fluid intruding into the wellbore is large, and it is the obvious sign of the suspected overflow. When the total hydrocarbon peak value continues to rise to a certain value or saturation, there is no downward trend, it indicates that the formation fluid is continuously intruding the wellbore, which is a clear warning of overflow. When the drilling fluid property changes slightly, the peak value of total hydrocarbon keeps rising to a certain peak value or the saturation state, there is no downward trend, the increases of the outlet flow rate and total pit volume indicate that the overflow has occurred. To carry out the overflow monitoring and forecast work in turn will not only help guide the on-site operators to improve the accuracy of the overflow forecast, but also expand the quoted ideas of mud logging parameters by the program developers of well control and early warning expert.

Key words:comprehensive mud logging, parameter, drilling, well control, overflow, forecast, method

Zhang Shiming,WDEC Tuha Mud Logging and Engineering Company, Railway Station Town, Shanshan County, Xinjiang, 838202,China

Improvement and field application of the calculation method of oil and gas upward flow velocity. Huan Zhipeng, Qiu Bin, Hu Jianfeng, Huan Zhicheng, Gao Song and Zeng Jie. Mud Logging Engineering, 2018, 29(1):34-37

The velocity of oil and gas upward flow is the key parameter for the evaluation of oil and gas reservoirs in the field and the safety assessment of well control, whether it is accurate or not is directly related to the well control safety of field drilling. Through the analysis of the factors affecting the velocity of oil and gas upward flow, it is found that the geofactors and non- geofactors are the two main causes of affecting the oil and gas upward flow velocity. The displacing of drilling tools in non- geofactors is the main influence factor of the error in the calculation of the oil and gas velocity in the field. Through the analysis of the influence of the displacement of the drilling tools, the improved formula of the traditional theoretical calculation method for the velocity of oil and gas upward flow under different working conditions is obtained. Field application shows that the improved calculation procedure can effectively eliminate the influence of drilling tool displacing action. The accurate basis is provided for ensuring well control safety of drilling construction, pressure monitoring while drilling and hydrocarbon reservoir evaluation.

Key words:aftereffect, oil and gas upward flow velocity, calculation procedure, displacing of drilling tools

Huan Zhipeng, Office B307, Exploration Utility Department, Tazhi Area, Korla,Xinjiang, 481000,China

Geosteering technology of horizontal well in Su20 block, Sulige gas field. Wang Jinrong, Wang Yushan, Li Guoliang, Tang Zhibo, Duan Chuanli, Gao Lei and Wang Ying. Mud Logging Engineering, 2018, 29(1): 38-41，52

从某种意义上讲，班级群是一个小小的社会团体。一个话题抛出来，大家的讨论比较随性，所以容易产生分歧，甚至言语冲突。很多新闻报道反映，班级群还有不少“戏精”“杠精”“点赞党”。

The reservoir sand body of the 8th member of shihezi formation of majer gas reservoir in Su 20 block, Sulige gas field is multiple-stage superposed longitudinally and laterally composite connection and strong heterogeneity of reservoir which results in a certain degree of difficulties for horizontal well entering the window accurately and trajectory control. Through years of horizontal well drilling practices, the geosteering technology while drilling of “two phases, three combinations, four comparisons, and five adjustments” has been summarized. The authors introduced the implementation of geosteering for entering the window from several aspects of data collection and arrangement, marker layer determination, fine stratigraphic correlation, vertical depth (elevation)correction, and the judgement of the successful entry into the window. Combining with the prediction of the top and bottom boundaries of the target layer, identification of the interlayers, horizontal well trajectory adjustment, etc., horizontal well horizontal section control technique and the analytic technique of gas layer drilled rate were described, and the application process and effects of horizontal well geosteering technology at the drilling site were carried out. The results showed that this technology can quickly and accurately evaluate the gas layers on site, determine the point of horizontal well entry window, realize accurate control of the horizontal sections, guide the drilling bits to drill in the effective reservoirs, improve the gas layer drilled rate of horizontal well, and ensure the development of horizontal wells to achieve good results.

Key words:horizontal well, geosteering, marker, vertical depth(elevation), correction, entery,window point, horizontal section control, lithology, gas logging

Wang Jinrong,Exploration Planning Room, Exploration & Development Research Institute of Dagang Oilfield, Tianjin, 300280,China

Application of element logging to the Ordovician horizontal wells in Daniudi gas field. Mei Jianfeng. Mud Logging Engineering, 2018, 29(1): 42-46，52

For the problems of complex lithology, difficult identification of the fine cuttings and no distinguishing between limestone and dolomite by gamma logging while drilling in the Ordovician horizontal wells of Daniudi gas field, through the correlation between major elements and rock mineral composition of different lithology, the element logging technology can be used to calculate the limestone content, dolomite content, shale content and sand content in the cuttings and achieve the accurate identification of the lithology. The element logging method has obvious application effect in the Ordovician horizontal wells. We can timely and accurately determine the horizons through the element content and mineral composition change characteristics, and then the trajectory adjustment can be made to accurately land at the designed A target point. In a horizontal section, it is possible to timely determine whether the lithology is the reservoir lithology or the surrounding rock lithology or the mudstone interlayer, so as to guide the correct trajectory adjustment of the geosteering and effectively improve the gas layer drilled rate.

Key words:Ordovician horizontal well, fine cuttings, gamma logging while drilling, major element, geosteering, gas layer drilled rate

Mei Jianfeng, 197 Funiu Road, Zhongyuan District, Zhengzhou Province, Henan Province, 450006 ,China

XRF element logging on calculating shale evaluation parameters while drilling. Gu Yanwu, Tang Cheng, Wang Chongjing, Liang Bo, Li Ruisong and Zhang Jun. Mud Logging Engineering, 2018, 29(1):47-52

Key words:Tamuchage basin, Nanbeier depression, principal component analysis, Euclidean distance, gas logging chart, fluid property

2.1.4 复合菌剂对玉米根际土壤蔗糖酶活性的影响 不同施肥处理，2个玉米品种在生育期根际土壤蔗糖酶活性呈现出：灌浆期>抽雄期>成熟期>苗期(图4)；在抽雄期和灌浆期，处理A和D蔗糖酶活性表现为金穗4号>先玉335，其他处理则表现为先玉335>金穗4号。在灌浆期，2个品种土壤蔗糖酶活性为：处理B>C>A>D>E，土壤蔗糖酶活性处理B比A和E分别提高24.5%，80.3%(先玉335)和13.7%、65.1%(金穗4号)。

Key words:XRF element logging, Yongchuan, Longmaxi formation, Wufeng formation, shale, evaluation

Key words:Longmaxi formation, shale gas reservoir, XRF element logging, gamma spectrometry logging, parameter while drilling, interpretation and evaluation

Construction of new gas logging interpretation chart based on Euclidean distance sorting method of principal component analysis. Liu Xiaoliang, Qiu Feng, Fan Xiaojun, Xiao Qiong, Jiang Lijun, Liu Xueshen, Yang Lei, Wan Anqiang and Liu Shuying. Mud Logging Engineering, 2018, 29(1): 53-58

在高度不确定的市场中，供应链上各个节点需要有相应的规则，相互监督，及时剔除绩效比较差或者有具有不良记录的成员，这样的供应链动态化调整，在不花太大代价的情况下，就能维护供应链节点的信用性，让网络信息更加可信。

The geologic conditions of Nanbeier oilfield in Tamuchage basin are complex and dominated by lithologic hydrocarbon reservoirs. The reservoirs often contain tuffs with various pore types and strong heterogeneity. In the depression, the target layers of Nantun formation belongs to the middle-low porosity and ultra-low permeability reservoirs, and it is difficult to identify fluid property. The traditional gas logging interpretation chart is low in coincidence rate. In order to investigate the effective method for identifying the fluid properties of Nantun formation reservoir in Nanbeier oilfield, the fluid original data of 8 gas logging parameters of 26 reservoirs verified by formation testing in the study area were collected. Three principal components obtained by dimension reduction were used as the new variables to find the new samples and their mean vectors and offset distance after the principal component calculations, then a new gas logging interpretation chart was constructed based on Euclidean distance sorting method. On the basis of the principle of dissimilarity and disengagement, similarity and together of new samples, the spatial orientation and division of the interpretation layers of different fluid properties were realized. The interpretation coincidence rate of the input sample used by this chart was 92.31%, and the interpretation accuracy of the recognition of the sample was 86.67%. It is proved that the gas logging interpretation chart established by this method has strong recognition capability and can meet the needs of actual production.

Shale evaluation parameters mainly depend on well logging or laboratory data, which poses difficulties for evaluation while drilling. Since the elements are the basic units of rock composition, they closely related to the rock components and electrical characteristics. By establishing a mathematical calculation model between the elements and shale evaluation parameters, 5 keys parameters, such as the rock siliceous content, calcareous content, shale content, rock density and gas concentration are calculated while drilling. The calculation model of shale evaluation parameters while drilling was applied to vertical well YY 3-1 and horizontal section YY 3-1HF in Yongchuan working region, and the shale evaluation parameters calculated by XRF element logging were consistent with the evaluation results of ECS logging, conventional logging and gas logging. The good results were obtained.

Mud logging characteristics of oil reservoirs with different oiliness are quite different, and so are the evaluation methods. The mixed source characteristics of reservoir forming in Laizhou Bay sag are obvious, and the difference in the degree of secondary effects leads to the variety of oily types. Based on the analysis of on-site geochemical data from 12 wells that were tested in Laizhou Bay sag, the qualitative and quantitative identification methods suitable for oily types in the area were summarized, among which the former is the pyrolysis gas chromatography and the latter is 3-parameter intersection chart method of (S0+S1)/S2,∑C21-/∑C22+and the main peak carbon number, that is, the discrimination can be carried through the establishment of the appropriate oily type discriminant criteria. Application practice has proved that the method can quickly and accurately determine the oily type. Laizhou Bay sag varies from shallow to deep with gradual changes in oiliness from heavy to light weight. The concrete manifestation is that the upper parts of Minghuazhen formation and Guantao formation are mostly the heavy oil of shallow biological degradation, the lower part of Guantao formation to the second member of Shahejie formation is mostly medium oil, and the formation below the third member of Shahejie formation is mostly medium-light weight oil.

Effects of drilling thin section identification and element analysis on reservoir identification. Zhu Hongtao. Mud Logging Engineering, 2018, 29(1): 59-62

The complex downhole geological conditions and great differences between the longitudinal and lateral changes of the reservoir have brought great difficulties to determine the horizon, coring, reservoir quality judge and drilling trajectory optimization and adjustment in Sichuan-Chongqing region. In order to overcome these problems in the construction site, the technology of microscope petrographic thin-section analysis and analytic technique of mineral element content while drilling were used. Taking Leikoupo formation in the western Sichuan region and Feixianguan formation in the eastern Sichuan region as examples, the content characteristics of mineral elements in the drilled strata were analyzed in a timely manner. Paleontological species, the characteristics of crystalline grain and crystal form development and the development characteristics of vug, cave and seam in the thin sections were observed and identified. The weathering crusts of Leikoupo formation and the interface between Feixianguan formation and Changxing formation were accurately identified. The actual drilling confirmed that the identification of thin section while drilling and element analysis provide a reliable basis for the division of the drilled strata, identification of characteristic lithology, the preliminary discrimination of reservoir development and the optimization and adjustment of the trajectory on site. The technology plays a vital role in reservoir identification.

Key words:identification of thin section while drilling, element analysis, characteristic lithology identification, stratigraphic division, reservoir determination, trajectory optimization and adjustment

Zhu Hongtao, 11 Gardening Street of Scientific & Innovative Park, Mianyang City, Sichuan Province, 621000,China

Research and application of horizontal well geochemistry logging technology in Jilin exploration area. Gao Qingqi. Mud Logging Engineering, 2018, 29(1): 63-67,72

易平安又看向自己身边的其他人。现在已经进入自习时间，教头也不太管学生们做什么，故而课堂上吵吵嚷嚷，但第五小旗有骆剑峰这样古板固执的头儿，永远是最安静的一个团队——当然易平安除外。

通过一个函数值域问题的教学，可以引导学生对认知结构中已有的一些解法进行提炼，让学生认识到思想方法之间的联系，从而帮助学生建立起对一类问题的整体认识，进而生成处理一类问题的基本方法。这样才能让学生做到举一反三，触类旁通〔5〕。

In view of the fact that the cuttings in horizontal wells are contaminated with drilling fluid, which results in the inability of the conventional mud logging to accurately classify the show levels, the horizontal well mud logging techniques have been introduced. While demonstrating the feasibility of the project, the differences between vertical wells and horizontal wells were fully taken into account, the traditional thinking model was broken through and the work was also carried out around the methods to remove cuttings contaminations, to analyze samples and to establish horizontal well evaluation. Through on-site experiments, it has been found out that the use of a 40-mesh sieve to clean the cuttings can effectively eliminate drilling fluid contamination and plays an important role in the discovery of oil and gas show. The aggregate sample analysis methods can solve the problem of picking samples and avoid dissipating the large number of hydrocarbons. On the basis of comparisons with several vertical wells in the same region, a geochemical logging evaluation method was established for the horizontal wells in the fourth member of Quantou formation of Rangzijing zone, Jilin exploration area. The method has high accuracy and has received good results through practical application, which lays a foundation for the development of geochemical mud logging technology in the future.

Key words:horizontal well, geochemical logging, elimination of contamination, aggregate sample analysis, interpretation and evaluation

Gao Qingqi, No.2 Geo-Logging Company, 789 Youth Street, Songyuan City, Jilin Province, 138000, China

Experimental study on the calculation of surface gas content by hydrocarbon content method. Lu Fawei, Ren Zhonghong, Zheng Haijun and Zhang Shanyong. Mud Logging Engineering, 2018, 29(1): 68-72

The first choice of gas logging technology is used as a conventional logging method in oil and gas exploration of Xihu depression. At the same time, a study of gas logging technology is carried out based on the fluid properties of gas reservoir to try to innovate the method of gas logging interpretation and evaluation. Therefore, based on the total hydrocarbon data, the surface gas content is calculated by using the theoretical formula of hydrocarbon content. The empirical formula of gas logging total hydrocarbon and surface gas content under different bit diameters is derived. Then the interpretation and evaluation method and criteria of surface gas bearing reservoir in Xihu depression are established. The good evaluation results received in the later exploration and interpretation indicate that this method can be a new technical means for gas logging technology in gas reservoir interpretation and evaluation.

Key words:Xihu depression, hydrocarbon content, surface gas content, total hydrocarbon, bit diameter

Lu Fawei, CNOOC Building, 388 Tongxie Road, Changning District, Shanghai, 200335,China

Application of geochemical logging technology in discrimination of oily type in Laizhou Bay sag. Peng Wenchun. Mud Logging Engineering, 2018, 29(1):73-77,83

Liu Xiaoliang, No.2 Data Acquisition Team, No.1 Geo-Logging Company, Ranghulu District, Daqing City, Heilongjiang Province, 163712, China

“古道”则是用典，用了《咸阳别李处士》“古道自迢迢，咸阳离别桥。”典故。古道是分别的最后一站，牵手走过的地方注定是预示着分别的存在，这使歌曲充满了离愁别绪，牵手走过的道路也成为了离别的道路，这使歌曲充满了戏剧化的魅力。

1.4.1 紫花苜蓿安全性调查 施药前目测试验区紫花苜蓿生长情况，施药后1、3、7、20 d调查各试验药剂对紫花苜蓿生长的影响，有药害的详细调查紫花苜蓿受害症状及症状出现、消失的时间。另外，最后1次(药后20 d)调查时，小区随机选取20株紫花苜蓿，测量紫花苜蓿株高，计算紫花苜蓿株高抑制率，明确药剂对紫花苜蓿生长的影响。

Peng Wenchun, Mailbox 548, Donggu Oil New Village, Binhai New Area(Tanggu), Tianjin, 300450,China

Mud logging interpretation for shale gas reservoir in Longmaxi formation of Silurian System, Sichuan Basin. Luo Xin, Qu Ziyi, Luo Mingsheng, Zeng Li, Wang Ke and Shu Ying. Mud Logging Engineering, 2018, 29(1): 78-83

The shale gas exploration strata in Sichuan Basin are mainly in Longmaxi formation system, Silurian System. The selection of shale gas reservoir evaluation parameters plays an important role in interpretation and evaluation. With the extensive application of new mud logging technologies, such as XRF element logging and gamma spectrometry logging in the shale gas reservoirs in Longmaxi formation, combined with the development and production status of the research area, the parameters while drilling have been used to establish calculation and prediction model for 4 parameters which can reflect reservoir characteristics of porosity, organic carbon content, gas concentration and brittle minerals, and reservoir interpretation and evaluation was performed. The interpretation and evaluation results in shale gas reservoir in Longmaxi formation of southern Sichuan indicated that the interpretation results of reservoir interpretation and evaluation model established with the parameters while drilling are basically consistent with the actual results, which can meet the needs of on-site reservoir interpretation and evaluation, and has extensive application and popularization prospects.

Gu Yanwu, 13 Gardening Street of Scientific & Innovative Park, Mianyang City, Sichuan Province, 621000,China

Luo Xin, No. 83 of Section 1 of Jianshe North Road, Chenghua District,Chengdu City, Sichuan Province, 610056, China

（六）教师指导。在学生进行体验式的自主学习过程中，教师需要根据网络平台中的评价系统，进行全程跟踪指导，不仅需要对学生的学习结果进行评价，还需要对学生的学习过程进行全方位、多维度的综合评价。

Photovoltaic solar power supply system for mud logging wireless sensor. She Mingjun, Li Shengli, Hu Xichen, Mao Xuebin, Xia Xiangcheng and Liu Yanhan. Mud Logging Engineering, 2018, 29(1): 84-87

In order to solve the problem of the high power consumption of the existing mud logging sensors and high cost of low power wireless mud logging sensors, through analyzing and testing of the sensor power consumption of the existing comprehensive mud logging unit, and using the principle of photovoltaic solar power generation, a photovoltaic solar power supply system based on current mud logging sensors was developed. The wireless transformation of the existing high power sensor is realized, and the solar wireless sensor is formed. The results of field application show that photovoltaic solar power supply system ensures the normal work of the sensor and saves the energy consumption. At the same time, the results also provide a development idea for the comprehensive mud logging equipment system to realize photovoltaic solar power supply and the application of remote mud logging technology. It is beneficial to improve the equipment level of the comprehensive mud logging system.

Key words:photovoltaic, solar energy, power supply, wireless sensor, energy-saving, lower power consumption

She Mingjun, Mud Logging Company, 85 Wuyi Road, Puyang City, Henan Province, 457001, China

Development and application of multi-parameter integrated sensor for drilling fluid. Guan Sheng, Zhong Zhihua, Zhou Wenjun, Xiao Gang, Zhou Jun, Liu Bin, Wang Jing, Chai Shengjie and Tang Changqing. Mud Logging Engineering, 2018, 29(1): 88-91

Three sensors of density, temperature and electrical conductivity are respectively equipped at drilling fluid inlet and outlet of comprehensive mud logging unit. And the space of the drilling fluid inlet and outlet for the installation of sensors is limited. In order to solve the large volume and the big mass of the sensor, and it is very inconvenient to install and disassemble sensors in the field, it is necessary to develop a new type of sensor with small volume and light mass, which is easy to disassemble and install, and integrates multi- parameter measurement function. Through integrated design, the original 3 independent sensors of density, temperature and conductivity are integrated into one, which not only reduces the volume and mass of the sensors, reduces labor intensity, improves the efficiency of disassembly and installation, but also realizes cost cutting and efficiency increasing. It has good application prospects.

Key words:comprehensive mud logging unit, drilling fluid, sensor, integration, using effect

Guan Sheng, Material Equipment Management Center of N0.2 Mud Logging Company, BHDC, Renqiu City, Hebei Province, 062500,China

定义9 称A′(ti+v)/A′(ti+v-1)为变换φi下，马尔可夫过程{ξ(t)，t∈T}，(t1

Reservoir sequence framework and its control effects on reservoirs of P formation in Chad BNE block. Hua Xia. Mud Logging Engineering, 2018, 29(1): 92-96

Bongor rift basin in Chad, due to its late tectonic inversion, has the unique characteristics in the formation of sequence, which leads to the strong plane and vertical heterogeneity of BNE reservoir and other reservoirs in the basin. The prerequisite of implementing the reservoir characteristics is to establish the reservoir sequence framework. Combining with regional structural evolution, analyzing sequence origin at all levels and using seismic, drilling, core, test and other data, the author established the correspondence between the sequence and bed set of each order under the guidance of sequence stratigraphy, the sequence interfaces can be identified and a 4-order sequence can be constructed under 3-order sequence framework, which can reflect interlayer difference in reservoirs. The results of the study showed that all sequences were affected by tectonic subsidence and global sea (lake) level changes. The sand groups in BNE reservoir correspond to a 4-order sequence due to the effects of long Milankovitch cycle. The top of the sequence interface is oil shale with low density and high interval transit time. The well-seismic combining method can better identify this order of sequence interface and further divide the strata in the case of the lack of reservoir coring data. Under the control of sequence framework, the lateral distribution and production capacity of each oil and water layer differ greatly. So it is of great significance to establish the target sequence framework for the efficient development of the stratification systems of multi-stage superimposed sandstone reservoir.

在城市景观建设过程中，必须在严格遵守自然发展规律的基础上，去推进相关建设内容。大自然处于不断更新与改变的过程中，其自我恢复能力很强。在建筑区域内部保留固有的植物，围绕生态环保的理念设计公园的内部景观，对人类自身生态环境保护意识的提升起到促进作用[2]。另一方面，为了更好地优化城市湿地公园建设区域内部的生态环境，构建全新的网状生态管道布置，并将该项设计准确地建设和规划起来，才能使得城市湿地公园的设计有效地与自然环境的发展相融合。

Key words:sequence framework, Milankovitch cycle, sequence interface identification, control effect, BNE reservoir

Hua Xia, No.322, Jinzhao Mansion, No.76 Oil Street, Xinglongtai District, Panjin City, Liaoning Province, 124009, China

Reservoir configuration of mouth bar in Saertu oil-bearing series of wellblock H 113 in Honggang oilfield. Wang Jian, Cheng Jianli, Dai Rongdong, Yu Shaoqing and Xing Liping. Mud Logging Engineering, 2018, 29(1): 97-102

Saertu oil-bearing series in wellblock H 113 of Honggang oilfield was taken as an example. Combining with core, well logging and oil field development dynamic monitoring data, under the guidance of the theory and mode of reservoir configuration, the research ideas of hierarchical constraints, model fitting, multi-dimensional interaction were adopted. The identification of the single mouth bar and prograding body of mouth bar in the study area was carried out. A set of fine anatomy method for the underground reservoir configuration of the mouth bar was formed. Under the guidance of the delta depositional model, the identification marks and distribution patterns of single mouth bar were summarized, the division of a single mouth bar is realized. The analysis shows that the width of the single mouth bar in the study area is between 1 300 and 2 000 m, and the length is between 2 800 and 4 200 m. On the basis of the identification of a single mouth bar, the internal anatomy of the mouth bar was made. The prograding body and foreset bed in a single mouth bar were determined, the dip of the foreset bed is about 0.3°,a configuration model of mouth bar reservoir was established. The research can provide the basis for the effect of guiding the remaining oil potential tapping. It can be used for reference to the development of the theory of reservoir configuration and the improvement of the efficiency of oil field development.

Key words:compound mouth bar, single mouth bar, prograding body, dip of foreset bed, reservoir configuration

Wang Jian, 306 Xisan Road, Dongying District, Dongying City, Shandong Province, 257000,China

Comprehensive prediction of the characteristics of the Mesozoic buried hill oil reservoir fracture development in block C of Dagang Oilfield. Zhuang Hongmei, Wang Jingjing, He Chuan and Zhou Lianmin. Mud Logging Engineering, 2018, 29(1):103-107

Accurate description and prediction of cracks is the key to effective evaluation of fractured reservoirs. The Mesozoic buried hill oil reservoir in block C of Dagang Oilfield is affected by tectonic stress field. At the same time, the Mesozoic strata are reformed due to the tectonic faulting movement of the late Cenozoic. Cracks are widely developed in hard strata with high resistivity. The characteristics of fracture type, occurrence and development density were analyzed by using a number of technical data, such as FMI imaging logging and core fracture observation. On the basis of this, the identification of ant tracking cracks is carried out. Through the comprehensive application of a number of technical data, the fracture data at all levels have been identified. The range is from centimeter to 100-meter, the regularities of fracture distribution are summarized. It is considered that the main development of block C is high conductivity fracture. And in the region of the main fault, the fracture is more developed, and its strike is consistent with the main fault. It is of great guiding significance to carry out the characteristics of the fracture distribution in the study area for the later reservoir productivity evaluation, reserve evaluation and reservoir fracturing and acidizing.

Key words:fracture, core, imaging logging, ant body tracking

Zhuang Hongmei, Exploration & Development Research Institute (new Institute) of Dagang Oilfield, Binhai New Area, Tianjin , 300280,China