王永卓,王瑞,代旭,陈铭,司丽
WANG Yongzhuo,WANG Rui,DAI Xu,CHEN Ming,SI Li

• 1:大庆油田有限责任公司勘探开发研究院
• 2:黑龙江省陆相页岩油重点实验室

摘要(Abstract)：

古龙页岩油作为全新的资源类型,尽管其勘探开发实践取得了重大突破,但如何科学合理动用这部分资源量并将其转化为现实产量,仍是当前亟待解决的难题之一。针对古龙页岩油青一、二段整体具有超压封存箱体特征,创新提出了水平井箱体开发理念,并赋予其理论内涵和实质意义。在此基础上,综合钻井、测井、地震、富集层综合解释等成果,优选最优开发箱体,通过建立三维地质模型、应力场模型定量分析水平井体积压裂人工缝网展布,优化水平井箱体开发参数,指导古龙页岩油规模效益开发。研究表明:模拟的水平井压裂缝长190～344 m,缝高10.2～15.06 m,簇间距7 m,裂缝导流能力3～25μm~2·cm,与实际压裂监测结果相符;青一段Q_1—Q_4箱体开发的最优方案是采用纵向交错、立体布井的方式,平面上井距为300～350 m,纵向上采用3套井网布井,水平段长度为2 000～2 500 m,优化后改造程度可提高13%,累计产油量可增加8%,单井最终可采储量(EUR)可在3×10~4t以上,满足古龙页岩油经济有效开发。该研究成果可为古龙页岩油先导试验井组开发方案设计提供有力依据,对下步古龙页岩油规模建产具有重要指导意义。
As an all-new resource type, Gulong shale oil has made a great breakthrough in its exploration and development practices, but how to scientifically and rationally develop this part of resources and turn it into real production are still one of current challenges. Aims at the overall overpressure compartment characteristics of Member Qing 1 and Qing 2 of Gulong shale oil, the concept of horizontal well compartment development is initiated, and its theoretical connotation and substantive significance are endowed. On these bases and integrating interpretation of drilling, logging, seismic and enriched-layers, the optimal developing compartment is optimized. 3 D geological model and stress field model are established to quantitatively analyze propagation of artificial fracture network of volumetric fractured horizontal wells and optimize development key parameters of the horizontal well compartment, thus guiding large-scale beneficial development of Gulong shale oil. The study shows hydraulic fractures of horizontal well with length of 190 ～ 344 m, height of 10.2 ～ 15.06 m, cluster spacing of 7 m, and conductivity of 3～25 μm~2·cm, being consistent with actual fracturing monitoring. The optimal compartment development plan for Q_1-Q_4 intervals in Member Qing 1 is vertical staggering and three-dimensional well deployment, with areal well spacing of 300 ～ 350 m, 3 sets of well patterns deployed vertically and horizontal section length of 2 000～2 500 m, increasing SRV by 13% and cumulative oil production by 8%, and single well EUR reaching more than 3 × 10~4t after optimization. All these achievements meet the demand of economic and effective development of Gulong shale oil. The research results provide evidences for development plan design of Gulong shale oil pilot test well pattern, and possess guiding significance for further large-scale productivity construction of Gulong shale oil.

关键词(KeyWords)： 古龙页岩油;箱体开发;地应力场建模;裂缝展布;体积压裂;开发设计
Gulong shale oil;compartment development;stress field modeling;fracture propagation;volumetric stimulation;development design

Abstract:

Keywords:

基金项目(Foundation): 中国石油天然气股份有限公司重大科技专项“松辽盆地北部石油精细勘探技术完善与规模增储”(2016E-0201);; 黑龙江省“百千万”工程科技重大专项“松辽盆地北部古龙页岩油成藏条件及甜点分布规律研究”(SC2020ZX05A0023)

作者(Author): 王永卓,王瑞,代旭,陈铭,司丽
WANG Yongzhuo,WANG Rui,DAI Xu,CHEN Ming,SI Li

DOI: 10.19597/J.ISSN.1000-3754.202107014

参考文献(References)：

• [1]孙龙德，刘合，何文渊，等.大庆古龙页岩油重大科学问题与研究路径探析[J].石油勘探与开发，2021,48(3):453-463.SUN Longde,LIU He,HE Wenyuan,et al.An analysis of major scientific problems and paths of Gulong shale oil in Daqing Oilfield,NE China [J].Petroleum Exploration and Development,2021,48(3):453-463.
• [2]孙龙德.古龙页岩油(代序)[J].大庆石油地质与开发，2020,39(3):1-7.SUN Longde.Gulong shale oil (preface) [J].Petroleum Geology & Oilfield Development in Daqing,2020,39(3):1-7.
• [3]贾承造，郑民，张永峰.中国非常规油气资源与勘探开发前景[J].石油勘探与开发，2012,39(2):129-136.JIA Chengzao,ZHENG Min,ZHANG Yongfeng.Unconventional hydrocarbon resources in China and the prospect of exploration and development[J].Petroleum Exploration and Development,2012,39(2):129-136.
• [4]王广昀，王凤兰，蒙启安，等.古龙页岩油战略意义及攻关方向[J].大庆石油地质与开发，2020,39(3):8-19.WANG Guangyun,WANG Fenglan,Meng Qi’an,et al.Strategic significance and research direction for Gulong shale oil[J].Petroleum Geology & Oilfield Development in Daqing,2020,39(3):8-19.
• [5]崔宝文，陈春瑞，林旭东，等.松辽盆地古龙页岩油甜点特征及分布[J].大庆石油地质与开发，2020,39(3):45-55.CUI Baowen,CHEN Chunrui,LIN Xudong,et al.Characteristics and distribution of sweet spots in Gulong shale oil reserviors of Songliao Basin[J].Petroleum Geology & Oilfield Development in Daqing,2020,39(3):45-55.
• [6]胥云，雷群，陈铭，等.体积改造技术理论研究进展与发展方向[J].石油勘探与开发，2018,45(5):874-887.XU Yun,LEI Qun,CHEN Ming,et al.Progress and development of volume stimulation techniques[J].Petroleum Exploration & Development,2018,45(5):874-887.
• [7]庞彦明，王永卓，王瑞，等.松辽盆地古龙页岩油水平井试采分析及产能预测[J].大庆石油地质与开发，2020,39(3):137-146.PANG Yanming,WANG Yongzhuo,WANG Rui,et al.Production test analysis and productivity prediction of horizontal wells in Gulong shale oil reservoirs,Songliao Basin[J].Petroleum Geology & Oilfield Development in Daqing,2020,39(3):137-146.
• [8]邹才能，陶士振，杨智，等.中国非常规油气勘探与研究新进展[J].矿物岩石地球化学通报，2012,31(4):312-322.ZOU Caineng,TAO Shizhen,YANG Zhi,et al.New advance in unconventional petroleum exploration and research in China [J].Bulletin of Mineralogy,Petrology and Geochemistry,2012,31(4):312-322.
• [9]胡素云，赵文智，侯连华，等.中国陆相页岩油发展潜力与技术对策[J].石油勘探与开发，2020,47(4):819-828.HU Suyun,ZHAO Wenzhi,HOU Lianhua,et al.Development potential and technical strategy of continental shale oil in China[J].Petroleum Exploration and Development,2020,47(4):819-828.
• [10]王玉华，梁江平，张金友，等.松辽盆地古龙页岩油资源潜力及勘探方向[J].大庆石油地质与开发，2020,39(3):20-34.WANG Yuhua,LIANG Jiangping,ZHANG Jinyou,et al.Resource potential and exploration direction of Gulong shale oil in Songliao Basin[J].Petroleum Geology & Oilfield Development in Daqing,2020,39(3):20-34.
• [11]杨雷，金之钧.全球页岩油发展及展望[J].中国石油勘探，2019,24(5):553-559.YANG Lei,JIN Zhijun.Global shale oil development and prospects[J].China Petroleum Exploration,2019,24(5):553-559.
• [12]王宏语，杨润泽，张峰，等.富含有机质泥页岩岩相表征的研究现状与趋势[J].地质科技情报，2018,37(2):141-148.WANG Hongyu,YANG Runze,ZHANG Feng,et al.Research progress and trend of organic-rich shale lithofacies characterization[J].Geological Science and Technology Information,2018,37(2):141-148.
• [13]王建华.DFN 模型裂缝建模新技术[J].断块油气田，2008,15(6):55-58.WANG Jianhua.DNF model:A new modeling technology for fracture [J].Fault-block oil & gas field,2008,15(6):55-58.
• [14]赵金洲，陈曦宇，刘长宇，等.水平井分段多簇压裂缝间干扰影响分析[J].天然气地球科学，2015,26(3):533-538.ZHAO Jinzhou,CHEN Xiyu,LIU Changyu,et al.The Analysis of Crack Interaction in Multi-stage Horizontal Fracturing [J].Natural Gas Geoscience,2015,26(3):533-538.
• [15]郭建春，尹建，赵志红.裂缝干扰下页岩储层压裂形成复杂裂缝可行性[J].岩石力学与工程学报，2014,33(8):589-596.GUO Jianchun,YI Jian,ZHAO Zhihong.Feasibility of formation of complex fractures under cracks interference in shale reservoir fracturing [J].Chinese Journal of rock Mechanics and Engineering,2014,33(8):589-596.
• [16]ROUNDTREE R,EBERHARD M J,BARREE R D.Horizontal near-Wellbore stress effects on fracture nitiation[R].SPE 123589,2009.
• [17]SINGH V,ROUSSEL N P,SHARMA M M .Stress reorientation and fracture treatments in horizontal wells[R].SPE 116092,2008.
• [18]曾联波，吕鹏，屈雪峰，等.致密低渗透储层多尺度裂缝及其形成地质条件[J].石油与天然气地质，2020,41(3):449-454.ZENG Lianbo,Lü Peng,QU Xuefeng,et al.Multi-scale fractures in tight sandstone reservoirs with low permeability and geological conditions of their development[J].Oil & Gas Geology,2020,41(3):449-454.
• [19]李宪文，赵振峰，李喆，等.随机分形压裂水平井缝网参数反演方法[J].断块油气田，2019,26(2):205-209.LI Xianwen,ZHAO Zhenfeng,LI Zhe,et al.Stochastic fractal model for fracture network parameter inversion of fracturing horizontal well[J].Fault-Block Oil & Gas Field,2019,26(2):205-209.
• [20]周健，陈勉，金衍，等.裂缝性储层水力裂缝扩展机理试验研究[J].石油学报，2007,28(5):109-113.ZHOU Jian,CHEN Mian,JIN Yan,et al.Experimental study on propagation mechanism of hydraulic fracture in naturally fractured reservoir[J].Acta Petrolei Sinica,2007,28(5):109-113.