石油工业技术监督
石油工業技術鑑督
석유공업기술감독
TECHNOLOGY SUPERVISION IN PETROLEUM INDUSTRY
2012年
1期
1-5
,共5页
何亚宁%刘莉莉%王心敏%毛美丽
何亞寧%劉莉莉%王心敏%毛美麗
하아저%류리리%왕심민%모미려
应力敏感%渗流机理%气井生产方式%产能%生产动态
應力敏感%滲流機理%氣井生產方式%產能%生產動態
응력민감%삼류궤리%기정생산방식%산능%생산동태
pressure sensibility%permeability flow principle%production mode of gas well%productivity%production dynamic state
苏里格气田是典型的低渗砂岩气藏,储层岩石孔隙结构复杂,具有明显压敏特征;目前气井采用控制产量和放压生产2种方式,其动态特征差别较大,对压敏条件下气体渗流机理及其对气井产能的影响认识不清,2种生产方式对气井开采效果的影响有待进一步评价。在岩心实验分析的基础上,通过储层压力敏感性评价,建立压敏条件下气井渗流方程,定量评价压敏条件下气井产能特征,并结合实际动态资料,修正渗透率压敏参数,分析预测气井开发后期生产动态,量化对比不同生产方式下压敏对气井开采效果的影响,优化配产,提升气田开发水平。
囌裏格氣田是典型的低滲砂巖氣藏,儲層巖石孔隙結構複雜,具有明顯壓敏特徵;目前氣井採用控製產量和放壓生產2種方式,其動態特徵差彆較大,對壓敏條件下氣體滲流機理及其對氣井產能的影響認識不清,2種生產方式對氣井開採效果的影響有待進一步評價。在巖心實驗分析的基礎上,通過儲層壓力敏感性評價,建立壓敏條件下氣井滲流方程,定量評價壓敏條件下氣井產能特徵,併結閤實際動態資料,脩正滲透率壓敏參數,分析預測氣井開髮後期生產動態,量化對比不同生產方式下壓敏對氣井開採效果的影響,優化配產,提升氣田開髮水平。
소리격기전시전형적저삼사암기장,저층암석공극결구복잡,구유명현압민특정;목전기정채용공제산량화방압생산2충방식,기동태특정차별교대,대압민조건하기체삼류궤리급기대기정산능적영향인식불청,2충생산방식대기정개채효과적영향유대진일보평개。재암심실험분석적기출상,통과저층압력민감성평개,건립압민조건하기정삼류방정,정량평개압민조건하기정산능특정,병결합실제동태자료,수정삼투솔압민삼수,분석예측기정개발후기생산동태,양화대비불동생산방식하압민대기정개채효과적영향,우화배산,제승기전개발수평。
Sulige gas field is the typical reservoir of low permeable sand rock, with the complex space structure of layer rocks, and the obvious feature of pressure sensibility. At present, gas fields adopt two production modes of controlling the output and releasing pres- sure. Since there is large difference between the dynamic features of both modes, gas fields cannot clearly understand the principle of gas permeable flow and its influence on gas well productivity. So it is necessary to make the further evaluation on the influence of two production modes on the exploitation efficiency. Based on the analysis of rock core experiment, through the evaluation on the pressure sensibility of reservoir layers, the permeability flow formula of gas well under the condition of pressure sensibility has been established in this paper, followed by the quantitative evaluation on the productivity feature of gas wells under the pressure sensibility. Meanwhile, combined with the practical dynamic data, the pressure sensibility parameter of permeability has been revised, together with the analysis and prediction of production dynamics duting the post production of gas well exploitation. In addition, the quantized contrastive analysis is focused on the influences of pressure sensibility on the exploitation efficiency under the different production modes in order to optimize the allocation and improve the level of gas field exploitation.