复杂油气藏
複雜油氣藏
복잡유기장
Complex Hydrocarbon Reservoirs
2015年
3期
59-62
,共4页
复合断块油田%油藏类型%水平井%出水特征%影响因素%CB 油田
複閤斷塊油田%油藏類型%水平井%齣水特徵%影響因素%CB 油田
복합단괴유전%유장류형%수평정%출수특정%영향인소%CB 유전
composite fault -block oilfield%reservoir type%horizontal well%characteristics of water breakthrough%influ-ence factor%CB Oilfield
针对 CB 油田现阶段水平井含水上升快、产量递减迅速等日益突出的问题，通过对该油田30口水平井出水特征的深入分析，建立以水平井含水率与无因次累计产油量变化曲线形态来判别出水规律，归纳出4种曲线类型，并结合油藏类型、驱动方式分析其成因。在此基础上明确了水平井出水特征及影响因素，影响因素包括油藏开采阶段、水平段位置、储层非均质性、采液强度和出砂状况，并提出针对性控水措施，为同类型油田水平井控水稳油对策的制定与水平井优选优化提供依据。
針對 CB 油田現階段水平井含水上升快、產量遞減迅速等日益突齣的問題，通過對該油田30口水平井齣水特徵的深入分析，建立以水平井含水率與無因次纍計產油量變化麯線形態來判彆齣水規律，歸納齣4種麯線類型，併結閤油藏類型、驅動方式分析其成因。在此基礎上明確瞭水平井齣水特徵及影響因素，影響因素包括油藏開採階段、水平段位置、儲層非均質性、採液彊度和齣砂狀況，併提齣針對性控水措施，為同類型油田水平井控水穩油對策的製定與水平井優選優化提供依據。
침대 CB 유전현계단수평정함수상승쾌、산량체감신속등일익돌출적문제，통과대해유전30구수평정출수특정적심입분석，건립이수평정함수솔여무인차루계산유량변화곡선형태래판별출수규률，귀납출4충곡선류형，병결합유장류형、구동방식분석기성인。재차기출상명학료수평정출수특정급영향인소，영향인소포괄유장개채계단、수평단위치、저층비균질성、채액강도화출사상황，병제출침대성공수조시，위동류형유전수평정공수은유대책적제정여수평정우선우화제공의거。
Aiming at the growing problems of rapid water-cut increasing an d oil production declining in CB Oilfield, analyzing characteristics of water breakthrough of 30 horizontal wells,a method was established to describe water break-through rule by curve pattern of dimensionless cumulative oil production changing with water -cut.Thus,four types of curves were summarized.Combined with reservoir type and driving means,the causes were analyzed.On this basis,the ma-jor influence factors of water breakthrough characteristic for horizontal well,including reservoir exploitation phase,horizon-tal section location,reservoir heterogeneity,liquid producing intensity and sand production conditions were clearly defined, which can provide an important guidance for making countermeasures for stable oil production and water control and opti-mizing design of horizontal wells in similar reservoirs.
