当代化工
噹代化工
당대화공
CONTEMPORARY CHEMICAL INDUSTRY
2014年
8期
1569-1571,1576
,共4页
尹洪军%杨春城%钟会影%王磊%马春晓
尹洪軍%楊春城%鐘會影%王磊%馬春曉
윤홍군%양춘성%종회영%왕뢰%마춘효
压裂水平井%裂缝性储层%点源函数%储能比%窜流系数
壓裂水平井%裂縫性儲層%點源函數%儲能比%竄流繫數
압렬수평정%렬봉성저층%점원함수%저능비%찬류계수
Fractured horizontal wells%Naturally fractured reservoirs%Point source function%Storage ratio%Inter-porosity flow coefficient
利用点源函数和叠加原理,建立并求解裂缝性储层压裂水平井数学模型,绘制并分析压力动态曲线。结果表明:裂缝性储层压裂水平井的流动形态可分为井筒储存、第一线性流、第一径向流、第二线性流、拟稳态窜流和第二径向流等6个主要阶段;裂缝半长一定下,裂缝间距越大,第一线性流持续时间越短,第一径向流持续时间越长;储能比决定窜流过渡段的凹槽宽度和凹陷深度;窜流系数决定窜流过渡段的凹槽位置。该研究成果可为裂缝性储层压裂水平井的动态分析及试井解释提供依据。
利用點源函數和疊加原理,建立併求解裂縫性儲層壓裂水平井數學模型,繪製併分析壓力動態麯線。結果錶明:裂縫性儲層壓裂水平井的流動形態可分為井筒儲存、第一線性流、第一徑嚮流、第二線性流、擬穩態竄流和第二徑嚮流等6箇主要階段;裂縫半長一定下,裂縫間距越大,第一線性流持續時間越短,第一徑嚮流持續時間越長;儲能比決定竄流過渡段的凹槽寬度和凹陷深度;竄流繫數決定竄流過渡段的凹槽位置。該研究成果可為裂縫性儲層壓裂水平井的動態分析及試井解釋提供依據。
이용점원함수화첩가원리,건립병구해렬봉성저층압렬수평정수학모형,회제병분석압력동태곡선。결과표명:렬봉성저층압렬수평정적류동형태가분위정통저존、제일선성류、제일경향류、제이선성류、의은태찬류화제이경향류등6개주요계단;렬봉반장일정하,렬봉간거월대,제일선성류지속시간월단,제일경향류지속시간월장;저능비결정찬류과도단적요조관도화요함심도;찬류계수결정찬류과도단적요조위치。해연구성과가위렬봉성저층압렬수평정적동태분석급시정해석제공의거。
A fractured horizontal well mathematical model was established and solved by using function theory and superposition principle in naturally fractured reservoirs;the pressure transient curves were analyzed. The results show that there are six main flow regimes, including wellbore storage, first liner flow, first radial flow, second liner flow, inter-porosity flow, second radial flow; when fracture half-length is constant, the bigger the spacing between the fractures, the shorter the period of first liner flow and the longer the first radial flow; the storage ratio affects the groove width and depth in pressure derivative curves;the inter-porosity flow coefficient affects the groove location in pressure derivative curves. The study has guiding significance to the dynamic analysis and well test interpretation of fractured horizontal wells in naturally fractured reservoirs.