石油勘探与开发 >

2021 , Vol. 48 >Issue 2: 326 - 336

DOI: https://doi.org/10.11698/PED.2021.02.09

油气田开发

非常规天然气"极限动用"开发理论与实践

  • 马新华
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  • 1.中国石油勘探开发研究院,北京 100083;
    2.国家能源页岩气研发（实验）中心,河北廊坊 065007
马新华（1962-）,男,湖北黄冈人,博士,中国石油勘探开发研究院教授级高级工程师,主要从事天然气勘探开发理论技术攻关。地址：北京市海淀区学院路20号,中国石油勘探开发研究院院办,邮政编码：100083。E-mail：xinhuam@petrochina.com.cn

收稿日期: 2020-08-08

  修回日期: 2021-03-03

  网络出版日期: 2021-03-19

基金资助

国家科技重大专项“大型油气田及煤层气开发”（2017ZX05035,2016ZX05037）

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“Extreme utilization” development theory of unconventional natural gas

  • MA Xinhua
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  • 1. PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China;
    2. National Energy Shale Gas R & D (Experiment) Center, Hebei 065007, China

Received date: 2020-08-08

  Revised date: 2021-03-03

  Online published: 2021-03-19

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摘要

基于非常规天然气的开发实践,逐渐形成了以“不断突破开发技术界限”为核心的“极限动用”理念,支撑中国非常规天然气规模效益开发,提出并论述了非常规天然气“极限动用”开发理论,阐述其理论内涵,梳理其系列开发技术及开发实践。理论内涵即针对“极限气藏”,采用“极限技术”,建立地下连通体,增大泄流面积,提高动用范围,追求最大单井产量和极限采收率,达到“极限效果”。系列开发技术包括微纳米尺度储集层评价技术、“甜点区/段”预测技术、非常规渗流理论与产能评价技术、网格化井网开发优化技术、优快钻井与体积压裂技术、生产制度优化与组织管理。苏里格致密气、川南页岩气及沁水煤层气等非常规气的开发实践证明,“极限动用”理论有力推动了中国非常规天然气的产业发展,同时能够为其他尚未突破的非常规和复杂难采资源有效开发提供理论指导。图11参32

关键词： 非常规天然气; 极限气藏; 极限开发; 极限动用理论; 地下连通体; 产能评价; 网格化井网; 排采优化

本文引用格式

马新华 . 非常规天然气"极限动用"开发理论与实践[J]. 石油勘探与开发, 2021 , 48(2) : 326 -336 . DOI: 10.11698/PED.2021.02.09

Abstract

In the process of unconventional natural gas development practice, the “extreme utilization” concept that focuses on “continuously breaking through the limit of development technology” is gradually formed, and supports the scale benefit exploration of unconventional gas in China. On this basis, the development theory of “extreme utilization” is proposed, its theoretical connotation together with development technologies of unconventional natural gas are clarified. The theoretical connotation is that, aiming at “extreme gas reservoirs”, “extreme techniques” are utilized to build subsurface connected bodies, expand the discharge area, and enlarge the production range, to obtain the maximum single-well production, extreme recovery, and eventually achieve the “extreme effect” of production. The series of development technologies include micro/nano-scale reservoir evaluation, “sweet spot” prediction, unconventional percolation theory and production capacity evaluation, optimization of grid well pattern, optimal-fast drilling and volume fracturing, and working regulation optimization and “integrated” organizing system. The “extreme utilization” development theory has been successfully applied in the development of unconventional gas reservoirs such as Sulige tight gas, South Sichuan shale gas, and Qinshui coalbed methane. Such practices demonstrate that, the “extreme utilization” development theory has effectively promoted the development of unconventional gas industry in China, and can provide theoretical guidance for effective development of other potential unconventional and difficult-to-recovery resources.

Key words： unconventional natural gas; extreme gas reservoir; extreme development; theory of extreme utilization; subsurface connected body; production capacity evaluation; grid well pattern; drainage and extraction optimization

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