石油勘探与开发
石油勘探與開髮
석유감탐여개발
PETROLEUM EXPLORATION AND DEVELOPMENT
2010年
2期
203-210
,共8页
张静%胡见义%罗平%宋金民
張靜%鬍見義%囉平%宋金民
장정%호견의%라평%송금민
白云岩%深埋%优质储集层%主控因素%勘探目标
白雲巖%深埋%優質儲集層%主控因素%勘探目標
백운암%심매%우질저집층%주공인소%감탐목표
dolomite%deep burial%quality reservoir%master control factor%exploration target
白云岩是碳酸盐岩油气藏的重要储集层类型.确定优质白云岩储集层发育的主控因素及相应的地质背景对于指导白云岩油气勘探具有重要的现实意义.实践证明,原岩类型和白云石化作用机制是控制白云岩基质孔隙发育程度的主要因素;后期各类岩溶作用的改造对于优质白云岩储集层的形成尤为关键.白云岩成岩作用研究表明,在深埋条件下,白云岩既可发育大量晶闻孔,又易形成溶蚀孔洞,孔洞形成后保存情况良好,有效储集空间的发育不明显受自云岩埋藏深度的制约,深埋的白云岩仍可具备优越的储集物性而成为优质储集层.由高能相带沉积物转变形成的埋藏成因白云岩、热液成因白云岩以及构造活动和水-岩作用活跃地区的白云岩是潜在的优质储集层和深部碳酸盐岩油气勘探的重点目标.
白雲巖是碳痠鹽巖油氣藏的重要儲集層類型.確定優質白雲巖儲集層髮育的主控因素及相應的地質揹景對于指導白雲巖油氣勘探具有重要的現實意義.實踐證明,原巖類型和白雲石化作用機製是控製白雲巖基質孔隙髮育程度的主要因素;後期各類巖溶作用的改造對于優質白雲巖儲集層的形成尤為關鍵.白雲巖成巖作用研究錶明,在深埋條件下,白雲巖既可髮育大量晶聞孔,又易形成溶蝕孔洞,孔洞形成後保存情況良好,有效儲集空間的髮育不明顯受自雲巖埋藏深度的製約,深埋的白雲巖仍可具備優越的儲集物性而成為優質儲集層.由高能相帶沉積物轉變形成的埋藏成因白雲巖、熱液成因白雲巖以及構造活動和水-巖作用活躍地區的白雲巖是潛在的優質儲集層和深部碳痠鹽巖油氣勘探的重點目標.
백운암시탄산염암유기장적중요저집층류형.학정우질백운암저집층발육적주공인소급상응적지질배경대우지도백운암유기감탐구유중요적현실의의.실천증명,원암류형화백운석화작용궤제시공제백운암기질공극발육정도적주요인소;후기각류암용작용적개조대우우질백운암저집층적형성우위관건.백운암성암작용연구표명,재심매조건하,백운암기가발육대량정문공,우역형성용식공동,공동형성후보존정황량호,유효저집공간적발육불명현수자운암매장심도적제약,심매적백운암잉가구비우월적저집물성이성위우질저집층.유고능상대침적물전변형성적매장성인백운암、열액성인백운암이급구조활동화수-암작용활약지구적백운암시잠재적우질저집층화심부탄산염암유기감탐적중점목표.
Dolomite is an important type of carbonate reservoirs. The understanding on the master control factors of high-quality dolomite reservoirs and the corresponding geological settings is of great significance to dolomite hydrocarbon exploration. Theories and ease studies prove that the initial rock and the mechanism of dolomitization are key influential factors on the matrix physical properties of the dolomite. Karstification is the most critical process in the development of high-quality dolomite reservoir. Recent diagenesis study indicates that a great amount of intercrystal and corrosion pores and corrosion cavities can be developed and preserved in deep-seated dolomites, which can also form high quality reservoir. In conclusion, the burial dolomite and matrix replacive hydrothermal dolomite which are transformed from high energy sediments, and the dolomite in areas with active tectonics and water-rock interaction are potential high-quality reservoirs and key exploration targets.