水平井地震导向技术探索与应用——以四川盆地复杂地区页岩气井为例

doi:10.11720/wtyht.2021.1109

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摘要

四川盆地南部志留系龙马溪组页岩层具有埋藏深度大(>3 000 m)、优质页岩段厚度薄、地层倾角变化快、微幅构造和微断裂发育等地质特点,传统地质导向技术难以准确识别纵向上甜点的靶体位置,水平段钻井过程中面临较高的靶体脱靶和出层风险。三维地震资料能够给水平井的侧钻和入靶提供导向,并通过地震资料指导水平段钻进。本文以四川盆地南部复杂地区页岩气水平井地震跟踪为例,介绍基于各向异性叠前深度偏移三维数据体的水平井地震导向技术新思路:以高精度成像资料为基础,考虑区域速度场背景,地质约束速度建模确保精准入靶;同时开展目标区块实时各向异性深度偏移处理,提高储层钻遇率;钻井过程中地震实时跟踪,有效帮助钻井地质导向,为钻井工程提供预警和调整方案。实钻表明:面向开发和工程需求的页岩气复杂构造区水平井地震导向技术,可有效提高水平井的有效储层钻遇率。

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	欧居刚
	王小兰
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	邓小江
	黄诚
	李文佳

关键词 ：页岩气, 水平井, 地震导向, 各向异性, 深度偏移

Abstract：

The Silurian Longmaxi Formation shale in the south of Sichuan Basin has the geological characteristics of large burial depth (more than 3000 meters), thin thickness of high-quality shale section,rapid change of formation dip angle,and development of micro structure and micro fracture.It is difficult for the traditional geosteering technology to accurately identify the target location of the longitudinal sweet spot.During the drilling process of horizontal section,there is a high risk of target miss target and formation production.The 3D seismic data can provide guidance for sidetracking and target entry of horizontal wells and guide horizontal drilling.Taking the seismic tracking of shale gas horizontal wells in the complex area of southern Sichuan Basin as an example,this paper introduces a new idea of horizontal well seismic guidance technology based on anisotropic prestack depth migration three-dimensional data volume.Based on high-precision imaging data and considering regional velocity field background,geological constraint velocity modeling ensures accurate target and,at the same time,real-time anisotropic depth migration of target block can be carried out.In addition,real-time seismic tracking during drilling can effectively help drilling geosteering and provide early warning and adjustment scheme for drilling engineering.The actual drilling shows that the seismic steering technology for horizontal wells in shale gas complex structural areas can effectively improve the effective reservoir drilling rate of horizontal wells for development and engineering needs.

Key words： shale gas horizontal well seismic guidance anisotropic depth migration

收稿日期: 2020-08-21 修回日期: 2021-03-01 出版日期: 2021-06-20

ZTFLH:

P631.4

基金资助:国家科技重大专项“大型油气田及煤层气开发,页岩气藏地球物理响应与优质储层识别”(2017ZX05035003)

作者简介: 欧居刚(1975-),男,从事地震勘探研究工作。Email: oujugang_sc@cnpc.com.cn

引用本文:

欧居刚, 王小兰, 杨晓, 邓小江, 黄诚, 李文佳. 水平井地震导向技术探索与应用——以四川盆地复杂地区页岩气井为例[J]. 物探与化探, 2021, 45(3): 551-559.
OU Ju-Gang, WANG Xiao-Lan, YANG Xiao, DENG Xiao-Jiang, HUANG Cheng, LI Wen-Jia. The exploration and application of horizontal well seismic guidance technology:A case study of shale wells in the complex area of Sichuan basin. Geophysical and Geochemical Exploration, 2021, 45(3): 551-559.

链接本文:

https://www.wutanyuhuatan.com/CN/10.11720/wtyht.2021.1109 或 https://www.wutanyuhuatan.com/CN/Y2021/V45/I3/551

Fig.1 长宁、威远建产区典型评价井五峰组—龙一₁亚段的小层划分综合柱状图

Fig.2 X水平井地质导向工程图

Fig.3 基于目标区块各向异性叠前深度偏移资料的水平段地震导向技术流程

Fig.4 钻井过程实时跟踪叠前深度快速处理流程

Fig.5 地层厚度约束井震误差平面对比(区内单井)

Fig.6 层厚约束各向异性叠前深度偏移前后对比
a—常规各向异性叠前深度偏移剖面;b—层厚约束各向异性叠前深度偏移剖面

Fig.7 泸州地区X设计井轨迹深度剖面叠合裂缝预测成果

Fig.8 入靶前井轨迹深度剖面叠合裂缝预测成果

Fig.9 更新速度场后深度剖面叠合裂缝预测成果

Fig.10 水平段钻进过程中实钻与地震预测地层倾角不符
a—工程图;b—实钻轨迹与地震剖面叠合图

Fig.11 各向异性叠前深度偏移叠合蚂蚁体剖面
a—工程图;b—实钻轨迹与地震剖面叠合图

[1]	董大忠, 施振生, 管全中, 等. 四川盆地五峰组—龙马溪组页岩气勘探进展、挑战与前景[J]. 天然气工业, 2018, 38(4):67-76.
[1]	Dong D Z, Shi Z S, Guan Q Z, et al. Progress,challenges and prospects of shale gas exploration in the Wufeng-Longmaxi reservoirs in the Sichuan Basin[J]. Natural Gas Industry, 2018, 38(4):67-76.
[2]	李振春. 地震叠前成像理论与方法[M]. 东营: 中国石油大学出版社, 2011.
[2]	Li Z C. Theory and method of seismic prestack imaging[M]. Dongying: China University of Petroleum Press, 2011.
[3]	Peng C, Yu H, Sheng J. Localized seismic imaging using diplets[P].US, 8010933, 2011-08-30.
[4]	Zhao X, Sheng J, Hu Y, et al. 3D localized prestack depth migration from workstations [C]//Extended Abstract of 72^nd EAGE Conference & Exhibition , 2010: 680344.
[5]	刘树根, 邓宾, 钟勇, 等. 四川盆地及周缘下古生界页岩气深埋藏—强改造独特地质作用[J]. 地学前缘, 2016, 23(1):11-28.
[5]	Liu S G, Deng B, Zhong Y, et al. Unique geological features of burial and superimposition of the Lower Paleozoic shale gas across the Sichuan Basin and its periphery[J]. Earth Science Frontiers, 2016, 23(1):11-28.
[6]	张岳桥, 董树文, 李建华, 等. 中生代多向挤压构造作用与四川盆地的形成和改造[J]. 中国地质, 2011, 38(2):233-250.
[6]	Zhang Y Q, Dong S W, Li J H, et al. Mesozoic multi-directional compressional tectonics and formation-reformation of Sichuan basin[J]. Geology in China, 2011, 38(2):233-250.
[7]	蒲泊伶, 蒋有录, 王毅, 等. 四川盆地下志留统龙马溪组页岩气成藏条件及有利地区分析[J]. 石油学报, 2010, 31(2):225-230.
[7]	Pu B L, Jiang Y L, Wang Y, et al. Reservoir-forming conditions and favorable exploration zones of shale gas in Lower Silurian Longmaxi Formation of Sichuan Basin[J]. Acta Petrolei Sinica, 2010, 31(2):225-230.
[8]	王红岩, 刘玉章, 董大忠, 等. 中国南方海相页岩气高效开发的科学问题[J]. 石油勘探与开发, 2013, 40(5):574-579.
[8]	Wang H Y, Liu Y Z, Dong D Z, et al. Scientific issues on effective development of marine shale gas in southern China[J]. Petroleum Exploration and Development, 2013, 40(5):574-579.
[9]	郭旭升. 南方海相页岩气“二元富集”规律——四川盆地及周缘龙马溪组页岩气勘探实践认识[J]. 地质学报, 2014, 88(7):1209-1218.
[9]	Guo X S. Rules of two-factor enrichiment for marine shale gas in southern China—Understanding from the Longniaxi formation shale gas in Sichuan Basin and its surrounding area[J]. Acta Geologica Sinica, 2014, 88(7):1209-1218.
[10]	郭旭升, 胡东风, 魏志红, 等. 涪陵页岩气田的发现与勘探认识[J]. 中国石油勘探, 2016, 21(3):24-37.
[10]	Guo X S, Hu D F, Wei Z H, et al. Discovery and exploration of Fuling shale gas field[J]. China Petroleum Exploration, 2016, 21(3):24-37.
[11]	谢军, 赵圣贤, 石学文, 等. 四川盆地页岩气水平井高产的地质主控因素[J]. 天然气工业, 2017, 37(7):1-12.
[11]	Xie J, Zhao S X, Shi X W, et al. Main geological factors controlling high production of horizontal shale gas wells in the Sichuan Basin[J]. Natural Gas Industry, 2017, 37(7):1-12.
[12]	刘乃震, 王国勇. 四川盆地威远区块页岩气甜点厘定与精准导向钻井[J]. 石油勘探与开发, 2016, 43(6):978-985.
[12]	Liu N Z, Wang G Y. Shale gas sweet spot identification and precise geo-steering drilling in Weiyuan Block of Sichuan Basin,SW China[J]. Petroleum Exploration and Development, 2016, 43(6):978-985.
[13]	查树贵, 刘利平, 廖朋, 等. 水平井地震地质导向技术及其在涪陵页岩气田的应用[J]. 石油物探, 2018, 57(3):369-377.
[13]	Zha S G, Liu L P, Liao P, et al. Seismic geosteering technology of horizontal well and its application in Fuling shale gas field[J]. Geophysical Prospecting for Petroleum, 2018, 57(3):369-377.
[14]	罗鑫. 昭通页岩气示范区复杂地质条件下的地质导向技术[J]. 钻采工艺, 2018, 41(3):29-32.
[14]	Luo X. Geosteering technology for complex geological conditions at Zhaotong shale gas development demonstration area[J]. Drilling & Production Technology, 2018, 41(3):29-32.
[15]	孙涛, 金瑞峰, 吴蜀燕, 等. GeosEast复杂构造速度建场技术[J]. 石油工业计算机应用, 2016, 24(3):48-51.
[15]	Sun T, Jin R F, Wu S Y, et al. GeoEast complex structure velocity field building technology[J]. CAP, 2016, 24(3):48-51.
[16]	黄芳燕. 复杂地质构造速度模型插值方法研究[J]. 世界有色金属, 2016, 18(3):30-32.
[16]	Huang F Y. Study on velocity model interpolation method of complex structure[J]. World Nonferrous Metal, 2016, 18(3):30-32.
[17]	杨宗青, 李宏伟, 欧居刚, 等. TTI介质各向异性参数优化提取方法[J]. 石油地球物理勘探, 2020, 55(1):111-116.
[17]	Yang Z Q, Li H W, Ou J G, et al. An optimized method for extracting anisotropic parameters in TTI media[J]. Oil Geophysical Prospecting, 2020, 55(1):111-116.

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