Improvement and Application of Mechanical Specific Energy Model in Buried Hill Reservoir Evaluation

doi:10.3969/j.issn.1006-6535.2024.04.019

Abstract

Abstract: The buried hill reservoirs in the Bohai oilfield exhibit diverse lithology,complex geological conditions,and strong heterogeneity,making traditional mechanical specific energy models less sensitive to the reservoir's performance and hard to provide efficient guide exploration strategy.Therefore,based on micro-bit drilling tests and the moving window theory,this study analyzed the response patterns of mechanical specific energy to engineering parameters,constructed standardized mechanical specific energy models and modified mechanical specific energy models,also formulated interpretation standards for reservoir performance in buried hill reservoirs.The results indicate that the drilling pressure coefficient of buried hill reservoirs in Bohai oilfield ranges from 0.309 to 0.605.When the specific energy of the modified mechanical model is less than 0.80,it corresponds to Type Ⅰ and Type Ⅱ reservoir; when the specific energy ranges from 0.80 to 1.15,it corresponds to Type Ⅲ reservoir,while when it exceeds 1.15,it is tight reservoir.The research findings have been applied in 36 buried exploration wells in Bohai oilfield,with anaverage interpretation coincidence rate of reservoir performance of 80.2%.This study can provide technical support for exploration decisions such as midterm testing and completion drilling, and has significant reference value.

Key words: mechanical specific energy model, reservoir performance, moving window principle, buried hill reservoir, Bohai Sea

CLC Number:

TE353

Li Hongru, Tan Zhongjian, Cheng Weihong, Deng Jinhui, Zhang Ligang, Zhang Zhihu, Liu Zhiwei. Improvement and Application of Mechanical Specific Energy Model in Buried Hill Reservoir Evaluation[J]. Special Oil & Gas Reservoirs, 2024, 31(4): 149-155.

References

[1] 薛永安.精细勘探背景下渤海油田勘探新思路与新进展[J].中国海上油气,2017,29(2):1-8.
XUE Yongan.New ideas and progresses under refine exploration background of Bohai Oilfield[J].China Offshore Oil and Gas,2017,29(2):1-8.
[2] 李鸿儒,谭忠健,符强,等.基于轻烃分析的复杂储层流体随钻评价新技术[J].特种油气藏,2023,30(3):56-62.
LI Hongru,TAN Zhongjian,FU Qiang,et al.A new technique for the evaluation of complex reservoir fluids while drilling on light hydrocarbon analysis[J].Special Oil & Gas Reservoirs,2023,30(3):56-62.
[3] 张晴,任重阳,张然舜,等.基于文献计量特征的我国深层页岩研究进展及趋势(2012—2022)[J].非常规油气,2023,10(1):21-26.
ZHANG Qing,REN Chongyang,ZHANG Ranshun,et al.Progress and trends of China's deep shale gas research based on bibliometric analysis(2012-2022)[J].Unconventional Oil & Gas,2023,10(1):21-26.
[4] 薛永安,李慧勇,许鹏,等.渤海海域中生界覆盖型潜山成藏认识与渤中13-2大油田发现[J].中国海上油气,2021,33(1):13-22.
XUE Yongan,LI Huiyong,XU Peng,et al.Recognition of oil and gas accumulation of Mesozoic covered buried hills in Bohai Sea Area and the discovery of BZ13-2 Oilfield[J].China Offshore Oil and Gas,2021,33(1):13-22.
[5] 赵迪斐,郭海英,朱炎铭,等.深层海相页岩储层精准评价与开发选层的评价体系问题评述[J].非常规油气,2022,9(2):1-7.
ZHAO Difei,GUO Haiying,ZHU Yanming,et al.Comments on the evaluation system of accurate evaluation and selection of deep marine shale reservoirs[J].Unconventional Oil & Gas,2022,9(2):1-7.
[6] 徐长贵,于海波,王军,等.渤海海域渤中19-6大型凝析气田形成条件与成藏特征[J].石油勘探与开发,2019,46(1):25-38.
XU Changgui,YU Haibo,WANG Jun,et al.Formation conditions and accumulation characteristics of Bozhong 19-6 large condensate gas field in offshore Bohai Bay Basin[J].Petroleum Exploration and Development,2019,46(1):25-38.
[7] 杜晓峰,刘晓健,张海涛,等.渤海海域太古界变质岩储层特征与形成控制因素[J].中国海上油气,2021,33(3):15-27.
DU Xiaofeng,LIU Xiaojian,ZHANG Haitao,et al.Characteristics and controlling factors of Archean metamorphic reservoirs in Bohai Sea Area[J].China Offshore Oil and Gas,2021,33(3):15-27.
[8] 叶涛,牛成民,王清斌,等.渤海湾盆地大型基岩潜山储层特征及其控制因素——以渤中19-6凝析气田为例[J].地质学报,2021,95(6):1889-1902.
YE Tao,NIU Chengmin,WANG Qingbin,et al.Characteristics and controlling factors of large bedrock buried-hill reservoirs in the Bohai Bay Basin:a case study of the BZ19-6 condensate field[J].Acta Geologica Sinica,2021,95(6):1889-1902.
[9] 侯明才,曹海洋,李慧勇,等.渤海海域渤中19-6构造带深层潜山储层特征及其控制因素[J].天然气工业,2019,39(1):33-44.
HOU Mingcai,CAO Haiyang,LI Huiyong,et al.Characteristics and controlling factors of deep buried-hill reservoirs in the BZ19-6 structural belt, Bohai Sea Area[J].Natural Gas Industry,2019,39(1):33-44.
[10] 卢欢,牛成民,李慧勇,等.变质岩潜山油气藏储层特征及评价[J].断块油气田,2020,27(1):28-33.
LU Huan,NIU Chengmin,LI Huiyong,et al.Reservoir feature and evaluation of metamorphic buried-hill reservoir[J].Fault-Block Oil & Gas Field,2020,27(1):28-33.
[11] 李鸿儒,谭忠健,胡云,等.渤中凹陷西南环M构造太古界潜山油气藏流体类型随钻识别方法[J].油气地质与采收率,2021,28(5):22-31.
LI Hongru,TAN Zhongjian,HU Yun,et al.Reservoir fluid type identification while drilling for Archaeozoic buried hill reservoir of M Structure at southwest margin of Bozhong Sag,Bohai Sea,east China[J].Petroleum Geology and Recovery Efficiency,2021,28(5):22-31.
[12] 童凯军,赵春明,吕坐彬,等.渤海变质岩潜山油藏储集层综合评价与裂缝表征[J].石油勘探与开发,2012,39(1):56-63.
TONG Kaijun,ZHAO Chunming,LYU Zuobin,et al.Reservoir evaluation and fracture characterization of the metamorphic buried hill reservoir in Bohai Bay[J].Petroleum Exploration and Development,2012,39(1):56-63.
[13] 王双龙,吕坐彬,韩雪芳,等.气测资料在变质岩潜山裂缝有效性评价及水淹层识别中的应用[J].特种油气藏,2020,27(2):70-77.
WANG Shuanglong,LYU Zuobin,HAN Xuefang,et al.Gas logging application in fracture evaluation and water-flooded zone identification in metamorphic buried-hill reservoir[J].Special Oil & Gas Reservoirs,2020,27(2):70-77.
[14] TEALE R.The concept of specific energy in rock drilling[J].International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts,1965,2(1):57-73.
[15] 陈绪跃,樊洪海,高德利,等.机械比能理论及其在钻井工程中的应用[J].钻采工艺,2015,38(1):6-10.
CHEN Xuyue,FAN Honghai,GAO Deli,et al.Mechanical specific energy theory and its application in drilling engineering[J].Drilling & Production Technology,2015,38(1):6-10.
[16] 路宗羽,徐生江,蒋振新,等.准噶尔南缘深井机械比能分析与钻井参数优化[J].西南石油大学学报(自然科学版),2021,43(4):51-61.
LU Zongyu,XU Shengjiang,JIANG Zhenxin,et al.Mechanical specific energy analysis and optimization of drilling parameters for nanyuan deep formations in Junggar Basin[J].Journal of Southwest Petroleum University (Natural Science Edition),2021,43(4):51-61.
[17] 耿长喜,胡宗敏,钱文博,等.随钻录井物性评价技术应用研究[J].录井工程,2017,28(3):27-32.
GENG Changxi,HU Zongmin,QIAN Wenbo,et al.Application research on physical property evaluation technology of logging while drilling[J].Mud Logging Engineering,2017,28(3):27-32.
[18] 谭伟雄,王俊瑞,邓强,等.花岗岩储层储集性能定量评价方法及应用[J].中国海上油气,2015,27(2):31-38.
TAN Weixiong,WANG Junrui,DENG Qiang,et al.Quantitative evaluation method for granite reservoir properties and its applications[J].China Offshore Oil and Gas,2015,27(2):31-38.
[19] 刘坤,马英文,张志虎,等.潜山裂缝性储层评价方法[J].石油钻采工艺,2018,40(增刊):58-61.
LIU Kun,MA Yingwen,ZHANG Zhihu,et al.Evaluation method for fractured reservoir in buried hill[J].Oil Drilling and Production Technology,2018,40(S):58-61.
[20] 黄卫东,隋泽栋,陈向辉,等.火成岩储集层机械比能物性评价技术研究[J].录井工程,2019,30(4):79-83.
HUANG Weidong,SUI Zedong,CHEN Xianghui,et al.Study on the evaluation technology of mechanical specific energy physical properties of igneous rock reservoirs[J].Mud Logging Engineering,2019,30(4):79-83.
[21] 薛懿伟,陈立强,徐鲲,等.渤中19-6大气田深部潜山硬地层钻井提速技术研究与应用[J].中国海上油气,2020,32(4):140-146.
XUE Yiwei,CHEN Liqiang,XU Kun,et al.Research and application of ROP improvement technology in deep buried hill hard formations of BZ19-6 large gas field[J].China Offshore Oil and Gas,2020,32(4):140-146.
[22] 崔猛,李佳军,纪国栋,等.基于机械比能理论的复合钻井参数优选方法[J].石油钻探技术,2014,42(1):66-70.
CUI Meng,LI Jiajun,JI Guodong,et al.Optimize method of drilling parameter of compound drilling based on mechanical specific energy theory[J].Petroleum Drilling Techniques,2014,42(1):66-70.
[23] 邹俊晨,齐金鹏,李娜,等.一种快速的突变点在线检测算法设计与实现[J].电子科技,2020,33(8):10-15.
ZOU Junchen,QI Jinpeng,LI Na,et al.Design and implementation of a fast online algorithm for mutation point detection[J].Electronic Science and Technology,2020,33(8):10-15.
[24] 李龙,管洁.基于距离异常点的机械比能评价储层物性研究[J].计算机与数字工程,2023,51(8):1924-1929.
LI Long,GUAN Jie.Research on mechanical specific energy evaluation of reservoir physical properties based on distance anomaly algorithm[J].Computer & Digital Engineering,2023,51(8):1924-1929.
[25] 胡诗梦,盛茂,石善志,等.基于钻头井底机械比能无监督聚类的水平井分段压裂段簇优化[J].天然气工业,2023,43(7):55-62.
HU Shimeng,SHENG Mao,SHI Shanzhi,et al.Optimization of fracturing stages/clusters in horizontal well based on unsupervised clustering of bottomhole mechanical specific energy on the bit[J].Natural Gas Industy,2023,43(7):55-62.