录井工程 ›› 2023, Vol. 34 ›› Issue (2): 117-122.doi: 10.3969/j.issn.1672-9803.2023.02.019

• 地质研究 • 上一篇    下一篇

莺歌海盆地高温高压地层破裂压力评价

陈现军①, 廖高龙②, 张鑫磊③   

  1. ①中法渤海地质服务有限公司湛江分公司;
    ②中海石油（中国）有限公司海南分公司;
    ③中国石油塔里木油田公司工程技术部
  • 收稿日期:2023-04-10 出版日期:2023-06-25 发布日期:2023-07-12
  • 作者简介:陈现军 高级工程师,1982年生,2013年毕业于西南石油大学石油与天然气工程专业,硕士学位,现在中法渤海地质服务有限公司湛江分公司从事工程录井研究工作。通信地址：524057 广东省湛江市坡头区南油五区物业楼。电话：13763056885。E-mail：chenxj@cfbgc.com
  • 基金资助:
    中国海洋石油有限公司“十四五”重大科技项目“海上深层/超深层油气勘探技术”（编号：KJGG2022-0405）

Fracture pressure evaluation of high temperature and high pressure formation in Yinggehai Basin

CHEN Xianjun①, LIAO Gaolong②, ZHANG Xinlei③   

  1. ①Zhanjiang Branch,China France Bohai Geoservices Co.,, Ltd., Zhanjiang, Guangdong 524057, China;
    ②CNOOC China Limited Hainan Company, Haikou, Hainan 570312, China;
    ③Engineering and Technology Department of PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000, China
  • Received:2023-04-10 Online:2023-06-25 Published:2023-07-12

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摘要： 为了确保莺歌海盆地高温高压地层安全钻井,需准确地进行地层破裂压力评价。以莺歌海盆地乐东区块为研究对象,分析该区块地层破裂原因,基于弹性力学理论构建了地层破裂压力计算模型,综合利用室内实验测试、现场地漏实验、现场孔隙压力测试及测井数据解释等方法,获得了该区块高温高压地层的抗拉强度、泊松比、孔隙压力和地应力等地层破裂压力计算模型所需的关键参数。在此基础上,结合现场钻井液漏失及地层破裂等情况分析,最终通过地层破裂压力计算模型获得了地层破裂压力分布剖面,可为研究区域钻井液性能及井身结构的合理设计提供参考。该地层破裂压力评价方法对于有效解决钻井液漏失问题、保证现场安全高效钻井具有积极的意义。

关键词: 地层破裂压力, 评价, 高温高压, 莺歌海盆地, 抗拉强度, 泊松比, 孔隙压力, 地应力

Abstract: Accurate evaluation of fracture pressure is one of the key basic problems to ensure safe drilling in high temperature and high pressure formation in Yinggehai Basin. Taking Ledong block in Yinggehai Basin as the research object, the cause of formation fracture in this area is analyzed, and the calculation model of formation fracture pressure is constructed based on the elasticity theory. The critical parameters required for the calculation model of formation fracture pressure such as tensile strength, poisson's ratio, pore pressure and in-situ stress of high temperature and high pressure formation in the target block are analyzed and evaluated by means of laboratory test, field leakage test, pore pressure test and logging data interpretation. On this basis, combined with the analysis of the actual situation of drilling fluid leakage and fracture, the formation fracture pressure distribution profile is obtained through the calculation model of formation fracture pressure, which can provide reference for the study on the performance of regional drilling fluid and the reasonable design of well structure. The evaluation method of formation fracture pressure can effectively solve the problem of drilling fluid leakage. It is of great significance to ensure safe and efficient drilling on site.

Key words: formation fracture pressure, evaluation, high temperature and high pressure, Yinggehai Basin, tensile strength, poisson's ratio, pore pressure, in-situ stress

中图分类号: 

  • TE132.1
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