安岳气田龙王庙组气藏地质特征与开发技术政策

发布时间：2018-02-09 18:58

本文关键词： 安岳气田磨溪区块龙王庙组碳酸盐岩气藏地质特征开发技术政策　出处：《石油勘探与开发》2017年03期 　论文类型：期刊论文

【摘要】：综合地震、钻井、测井、生产动态等资料,针对四川盆地安岳气田磨溪区块下寒武统龙王庙组储集层特征与展布、气水分布等影响开发效果的关键地质问题开展研究,确定开发技术对策。结果表明:(1)磨溪区块垂向发育4期颗粒滩体,平面呈现"两滩一沟"格局;(2)储集层可分为溶蚀孔洞、溶蚀孔隙和基质孔隙3种类型,有效储集层以溶蚀孔洞和溶蚀孔隙型为主;(3)储集层基质物性较差,受高角度构造缝影响,整体表现为低孔、中—高渗特征;(4)气藏由西向东,气水界面逐渐降低,呈"三段式"结构,建产区统一气水界面为-4 385 m。在气藏地质特征认识基础上,结合数值模拟结果与国内外相似气田开发经验,确定开发技术政策:以颗粒滩主体发育区作为优先建产目标区;在构造高部位集中布井,延缓边水非均匀推进速度,延长气田稳产期;部署水平井,提高单井产能;确定气井合理配产和调峰气井产量,提升气藏开发效果。
[Abstract]:Based on the data of seismic, drilling, logging and production dynamics, the key geological problems such as reservoir characteristics and distribution of gas and water in Lower Cambrian Longwangmiao formation in Moxi block of Anyue Gas Field in Sichuan Basin are studied. The results show that the grain shoal body developed vertically in the Moxi block in the 4th stage, and the flat plane presents "two beaches and one gully" pattern. The reservoir can be divided into three types: the solution pore, the dissolution pore and the matrix pore, and the reservoir can be divided into three types: the solution pore, the dissolution pore and the matrix pore, and the reservoir can be divided into three types. The effective reservoir is mainly composed of dissolved pore and dissolved pore type. The matrix physical property of the reservoir is poor, which is affected by high angle structural fractures. The whole reservoir is characterized by low porosity, middle and high permeability gas reservoirs from west to east, and the gas-water interface decreases gradually. There is a "three-section" structure with a uniform gas-water interface of -4 385 m. Based on the understanding of the geological characteristics of the gas reservoir, the numerical simulation results are combined with the similar gas field development experience at home and abroad. Determine the development technology policy: take the main development area of the grain beach as the priority production target area, concentrate well distribution in the high part of the structure, delay the non-uniform advance speed of the edge water, prolong the stable production period of the gas field, arrange the horizontal well, improve the productivity of single well; To determine the reasonable production of gas wells and peak-shaving gas wells to improve the gas reservoir development.
【作者单位】：中国石油勘探开发研究院;中国石油大学(华东)地球科学与技术学院;中国石油勘探与生产分公司;
【基金】：中国石油天然气股份有限公司重大科技专项“深层油气藏开发关键技术”(2014E-3203)
【分类号】：P618.13;TE37

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