第40卷第1期
天然气勘探与开发
地质勘探
塔里木盆地库车坳陷克深气田构造特征及其
对气藏的控制作用有曾庆才郭晓龙李璇
定边海军
代春萌
中国石油勘探开发研究院廊坊分院
塔里木盆地库车地陷克深盐下构造是该区的重点油气勘探领域。但由于目的层理藏深，盐下高陡构造地震资料品质
摘
要
精确成像围难，构造落实程度不高等间题严重形响了气田勘探开发进度。针对克深高陵复杂构造特点，基于新方法处理的全
差，
，研究构造特征及其对气藏的控制作用。研究成果表明；①在北推左旋压扭应力作用下，
三维地震解释成果，重新落实了构造细节，
图闭平面上星雁列式展布；冲起构造气蔬密封性好，利于气藏的
克深盐下构遗发育冲起构造、屋脊构造、变换构造等构造样式，
保存，屋资构造中间断裂对气藏起破坏作用。①研究区由西向东可划分为三排图闭带，围闲带间以调节断层成福领实现构造转换：
图闭最为有利；西带上覆膏岩厚度小，断裂发育，封堵条件差；东带构造位置低，
中带构造幅度大，上覆膏岩厚度大，封堵性好，
构造幅度小，有效围闭幅度小，气水关系复杂。①受构造条件控制三排圈闭带星现由西向东图阅理深加大，幅度减小、形态变缓的特点。该认识对克采气田开发方案的两整实施及下一步重点勘探开发方向的确定其有参考价值。
控制作用
关键词
塔里木盆地
屋脊构造
克深气田
冲超构造
变换构造
雁列式展布
Structural characteristics of Keshen Gasfield inKuqaDepression of TarimBasin
andtheircontrollingeffectsongasreservoirs Dai Chunmeng, Zeng Qingcai, Guo Xiaolong, Li Xuan, Bian Haijun
(Langfang Branch of PetroChina Research Instituteof Petroleum Exploration &Development,Langfang,Hebei 065007,China)
Abstract: The Keshen subsalt structure in Kuqa Depression, the Tarim Basin, is an important exploration of this area. How-ever, the exploration and development of Tarim Oilfield is intensely impacted by the deep burial depth of target layers, poor seismic data quality of subsalt high and steep structures, difficulties of precise imaging and low confirming level of structures In view of their complex characteristics, Keshen high and steep structures were ascertained in detail again based on the full 3D seismic interpretation results which were processed by using the new method. Then their characteristics and controlling effects seaeea tonic styles are developed in Keshen subsalt structures, such as pop-up structure, roof structure and transfer structure, and they distribute in the pattern of en echelon in the plane of traps. Pop-up structure is favorable for the preservation of gas reservoirs, and the sealing capacity of gas reservoirs in pop-up structures is good. The middle faulting of roof structure is destructive to gas reservoirs. The study area is divided into three trap zones from the west to the east, and the structural transition between trap zones are in the forms of adjusting faults orfolds. In the middle zone, structural amplitude is large and the overlying gyp-sum rocks are thick with good sealing capacity,so the traps in this zone are the most favorable. In the west zone, the overlying gypsum rocks are thin with developed fractures, so the sealing condition is poor. The east zone is structurally low with small structural amplitude, low effective trap amplitude and complex gas-water relationship. Dominated by tectonic conditions, three trap zones show the characteristics of burial depth increasing, structural amplitude decreasing and structural form flatting from the west to the east. The research results can be used as the reference for adjusting and implementing the development scheme and determining the important exploration and development targets of Keshen Gasfield in the following steps.
Keywords: Tarim Basin; Keshen Gasfield; Pop-up structure, Roof structure; Transfer structure; En echelon distribution; Con-trolling effects
第一作者简介：代春萌，1980年生，工程师，硕士；从事天然气储层预测研究工作。地址：（065007）河北省廊坊市万庄44号信箱。电话：15832619816。E-mail: daichunm69@petrochina.com.cn
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