石油与天然气地质
石油與天然氣地質
석유여천연기지질
OIL & GAS GEOLOGY
2009年
6期
732-739
,共8页
樊茹%邵辉%贾爱林%何东博%张学磊%邓胜徽%位云生%季丽丹%陈涛涛
樊茹%邵輝%賈愛林%何東博%張學磊%鄧勝徽%位雲生%季麗丹%陳濤濤
번여%소휘%가애림%하동박%장학뢰%산성휘%위운생%계려단%진도도
气、水分异%成藏过程%孔隙-岩性型致密气藏%须家河组%四川盆地中部
氣、水分異%成藏過程%孔隙-巖性型緻密氣藏%鬚傢河組%四川盆地中部
기、수분이%성장과정%공극-암성형치밀기장%수가하조%사천분지중부
water-gas differentiation%pooling process%porous-lithologic tight gas reservoir%Xujiahe Formation%central Sichuan Basin
川中广安须家河气藏为孔隙 -岩性型致密气藏.根据78口试采井数据分析,认为储层的孔喉构成了成藏过程中主要的疏导体系,储层物性及非均质性控制气、水的运聚和分布;构造在气藏后期改造中影响天然气的聚集,较低的构造幅度致使气、水分异差,气井普遍产水.气藏内可划分出富气区、次富气区及气、水同产区3类气水分布区,相应地提出高渗透带、单砂体及微构造控制的3种气、水分布模式.
川中廣安鬚傢河氣藏為孔隙 -巖性型緻密氣藏.根據78口試採井數據分析,認為儲層的孔喉構成瞭成藏過程中主要的疏導體繫,儲層物性及非均質性控製氣、水的運聚和分佈;構造在氣藏後期改造中影響天然氣的聚集,較低的構造幅度緻使氣、水分異差,氣井普遍產水.氣藏內可劃分齣富氣區、次富氣區及氣、水同產區3類氣水分佈區,相應地提齣高滲透帶、單砂體及微構造控製的3種氣、水分佈模式.
천중엄안수가하기장위공극 -암성형치밀기장.근거78구시채정수거분석,인위저층적공후구성료성장과정중주요적소도체계,저층물성급비균질성공제기、수적운취화분포;구조재기장후기개조중영향천연기적취집,교저적구조폭도치사기、수분이차,기정보편산수.기장내가화분출부기구、차부기구급기、수동산구3류기수분포구,상응지제출고삼투대、단사체급미구조공제적3충기、수분포모식.
The gas reservoirs in the Xujiahe Formation,Guang'an area,central Sichuan Basin,are porous-litho-logic tight gas reservoirs.Production test data of 78 wells in the area were analyzed and the following conclusions were obtained.Pore throats in these reservoirs form the main carrier system during the pooling process,and the migration,accumulation and distribution of gas and water is controlled by the physical properties and heteroge-neity of these reservoirs.Gas accumulation is affected by the structures during the later reformation of these reservoirs,and the relatively low amplitude of the structures causes the poor gas-water differentiation,thus water production is common in the gas wells there.The gas reservoirs can be divided into three zones (primary gas zone,secondary gas zone,and gas-water zone) according to the gas and water distribution.Three patterns of gas and water distribution are correspondingly proposed,namely highly permeable zone pattern,single sandbody pattern and micro-fracture-controlling pattern.
