天然气工业
天然氣工業
천연기공업
NATURAL GASINDUSTRY
2009年
10期
45-47
,共3页
四川盆地%地层压力%气藏规律%气水界面%测试%晚二叠世%早三叠世%应用
四川盆地%地層壓力%氣藏規律%氣水界麵%測試%晚二疊世%早三疊世%應用
사천분지%지층압력%기장규률%기수계면%측시%만이첩세%조삼첩세%응용
Sichuan Basin%MDT logging technology%formation pressure%gas reservoir%pattern%gas-water contact%test%Late Permian%Early Triassic%application
LG地区的预探井钻获工业气流后,在该井周围相继钻探了多口井,地质上迫切需要了解储层在横向上的变化情况、气水层在纵向上分布状况和气水界面等.为此,对LG地区10多口预探井及评价井进行了MDT地层测试,较好地解释了二叠系长兴组各个礁滩气藏以及三叠系飞仙关组各个鲕滩气藏之间的关系.研究表明:飞仙关组鲕滩储层中,LG1井与LG001-1、LG001-3、LG001-6井等属同一压力系统,而与LG2井、LG3井和LG6井为不同的压力系统;长兴组礁滩储层中,LG1井与LG2井气层不属同一压力系统,而与LG001-1井、LG001-3井为同一压力系统,LG12井与LG28井为同一压力系统,LG8井和LG11井分别为单独压力系统.该分析结果为单井地层压力分析、气水识别、压力系统分析及后期的储量计算和开发方案的实施提供了直接依据.
LG地區的預探井鑽穫工業氣流後,在該井週圍相繼鑽探瞭多口井,地質上迫切需要瞭解儲層在橫嚮上的變化情況、氣水層在縱嚮上分佈狀況和氣水界麵等.為此,對LG地區10多口預探井及評價井進行瞭MDT地層測試,較好地解釋瞭二疊繫長興組各箇礁灘氣藏以及三疊繫飛仙關組各箇鮞灘氣藏之間的關繫.研究錶明:飛仙關組鮞灘儲層中,LG1井與LG001-1、LG001-3、LG001-6井等屬同一壓力繫統,而與LG2井、LG3井和LG6井為不同的壓力繫統;長興組礁灘儲層中,LG1井與LG2井氣層不屬同一壓力繫統,而與LG001-1井、LG001-3井為同一壓力繫統,LG12井與LG28井為同一壓力繫統,LG8井和LG11井分彆為單獨壓力繫統.該分析結果為單井地層壓力分析、氣水識彆、壓力繫統分析及後期的儲量計算和開髮方案的實施提供瞭直接依據.
LG지구적예탐정찬획공업기류후,재해정주위상계찬탐료다구정,지질상박절수요료해저층재횡향상적변화정황、기수층재종향상분포상황화기수계면등.위차,대LG지구10다구예탐정급평개정진행료MDT지층측시,교호지해석료이첩계장흥조각개초탄기장이급삼첩계비선관조각개이탄기장지간적관계.연구표명:비선관조이탄저층중,LG1정여LG001-1、LG001-3、LG001-6정등속동일압력계통,이여LG2정、LG3정화LG6정위불동적압력계통;장흥조초탄저층중,LG1정여LG2정기층불속동일압력계통,이여LG001-1정、LG001-3정위동일압력계통,LG12정여LG28정위동일압력계통,LG8정화LG11정분별위단독압력계통.해분석결과위단정지층압력분석、기수식별、압력계통분석급후기적저량계산화개발방안적실시제공료직접의거.
After the industrial gas flow was obtained in the exploratory well LG1 in the LG area, several other wells were successively drilled around this well. It is urgent to understand the lateral variation of reservoirs, vertical distribution of gas and water layers and the location of gas-water contact. Therefore, the MDT logging was carried out in over 10 exploratory wells and appraisal wells in the LG area to define the relationship among various gas reservoirs of reef and beach facies in the Permian Changxing Formation and that among gas reservoirs of oolitic beach facies in the Triassic Feixianguan Formation. The following results were obtained. For the reservoirs of oolitic beach facies in the Feixianguan Formation, the wells LG1, LG001-1, LG001-3 and LG001-6 share the same pressure system, while the wells LG2, LG3 and LG6 belong to different pressure systems. In contrast, for the reservoirs of reef and beach facies in the Changxing Formation, the wells LG1 and LG2 do not belong to the same pressure system, the wells LG001-1 and LG001-3 share the same pressure system, the wells LG12 and LG28 also share the same pressure system, while both wells LG8 and LG11 have a separate pressure system. These results provide direct basis for single well formation pressure analysis, identification of gas and water layers, pressure system analysis as well as later reserve estimation and development planning.
