成都理工大学学报（自然科学版）
成都理工大學學報（自然科學版）
성도리공대학학보（자연과학판）
JOURNAL OF CHENGDU UNIVERSITY OF TECHNOLOGY(SCIENCE & TECHNOLOGY EDITION)
2014年
6期
713-722
,共10页
吴娟%刘树根%赵异华%孙玮%宋林珂%宋金民%梁锋%田艳红%龙翼%李俊良
吳娟%劉樹根%趙異華%孫瑋%宋林珂%宋金民%樑鋒%田豔紅%龍翼%李俊良
오연%류수근%조이화%손위%송림가%송금민%량봉%전염홍%룡익%리준량
四川盆地%高石梯-磨溪构造%震旦系-寒武系%地层水%超压
四川盆地%高石梯-磨溪構造%震旦繫-寒武繫%地層水%超壓
사천분지%고석제-마계구조%진단계-한무계%지층수%초압
Sichuan Basin%Gaoshiti-Moxi structure%Sinian-Cambrian%formation water%overpressure
下寒武统龙王庙组－上震旦统灯影组是川中高石梯－磨溪构造主要的含气层系。以地层水化学资料和实测地层压力为基础，分析灯影组－龙王庙组地层水化学特征和地层压力分布，研究地层流体特征与油气成藏的关系。结果显示：地层水离子中Cl－、K＋＋Na＋和Ca2＋占绝对优势，以CaCl2型地层水为主，总矿化度高，变质程度深，封闭性好，还原性强，对油气聚集和保存十分有利。根据压力系数分布特征将龙王庙组－灯影组划分为龙王庙组异常高压带、灯四段－灯二段上部常压带和灯二段下部异常低压带。天然气高产区与地层水矿化度高值区以及超压分布区具有良好的对应关系，压力系数对天然气产量的影响尤为明显。
下寒武統龍王廟組－上震旦統燈影組是川中高石梯－磨溪構造主要的含氣層繫。以地層水化學資料和實測地層壓力為基礎，分析燈影組－龍王廟組地層水化學特徵和地層壓力分佈，研究地層流體特徵與油氣成藏的關繫。結果顯示：地層水離子中Cl－、K＋＋Na＋和Ca2＋佔絕對優勢，以CaCl2型地層水為主，總礦化度高，變質程度深，封閉性好，還原性彊，對油氣聚集和保存十分有利。根據壓力繫數分佈特徵將龍王廟組－燈影組劃分為龍王廟組異常高壓帶、燈四段－燈二段上部常壓帶和燈二段下部異常低壓帶。天然氣高產區與地層水礦化度高值區以及超壓分佈區具有良好的對應關繫，壓力繫數對天然氣產量的影響尤為明顯。
하한무통룡왕묘조－상진단통등영조시천중고석제－마계구조주요적함기층계。이지층수화학자료화실측지층압력위기출，분석등영조－룡왕묘조지층수화학특정화지층압력분포，연구지층류체특정여유기성장적관계。결과현시：지층수리자중Cl－、K＋＋Na＋화Ca2＋점절대우세，이CaCl2형지층수위주，총광화도고，변질정도심，봉폐성호，환원성강，대유기취집화보존십분유리。근거압력계수분포특정장룡왕묘조－등영조화분위룡왕묘조이상고압대、등사단－등이단상부상압대화등이단하부이상저압대。천연기고산구여지층수광화도고치구이급초압분포구구유량호적대응관계，압력계수대천연기산량적영향우위명현。
The Upper Sinian Dengying Formation and Lower Cambrian Longwangmiao Formation are the main gas-bearing strata in the Gaoshiti-Moxi structure of Central Sichuan.Depending on the hydrochemical data and the measured pressure,this paper analyzes the hydrochemical characteristics and pressure distribution,and studies the relationship between the fluid characteristics and the hydrocarbon accumulation.The hydrochemical characteristics show that the major water ions are Cl-, K++ Na+ and Ca2+.CaCl2 is the main type of the formation water in the study area.The formation water has high salinity,deep metamorphose degree,good sealing and strong reducibility.All these conditions are very favorable for hydrocarbon accumulation and preservation. According to the pressure coefficient distribution,the Dengying Formation-Longwangmiao Formation can be divided into three zones,that,the overpressure zone in the Longwangmiao Formation,the normal pressure zone in Member 4 of Dengying Formation to the upper part of Member 2 of the Dengying Formation and the subpressure zone in the lower part of Member 2 of the Dengying Formation.The high gas production area has a positive correlation with high formation water salinity area and overpressure area,and the influence of the pressure coefficients on the gas production is especially evident.
