中国矿业
中國礦業
중국광업
CHINA MINING MAGAZINE
2015年
6期
132-137
,共6页
姜宝益%李治平%刘刚%第五鹏祥%王建宁%甘火华
薑寶益%李治平%劉剛%第五鵬祥%王建寧%甘火華
강보익%리치평%류강%제오붕상%왕건저%감화화
页岩气%不稳定压力%传播规律%复合模型%影响因素
頁巖氣%不穩定壓力%傳播規律%複閤模型%影響因素
혈암기%불은정압력%전파규률%복합모형%영향인소
shale gas%unstable pressure%propagation%composite model%influencing factor
页岩气藏已经成为全球油气勘探的新亮点。由于页岩气藏特殊的地质特征和储层物性,页岩气藏不稳定的压力传播方式及影响规律并没有充分认识清楚。本文建立了考虑启动压力梯度和赋存状态的页岩气藏复合模型,利用非齐次虚宗贝塞尔函数进行页岩气藏复合模型井底压力数学模型的求解,分析页岩气藏不稳定压力传播的规律,研究了页岩气藏井储系数、解吸压缩系数、内区渗透率、表皮因子、启动压力梯度等因素的影响规律。结果表明,对于外区渗透率相对低的页岩气复合油藏中,解吸压缩系数、井储系数、内区渗透率和内区半径是敏感因素。
頁巖氣藏已經成為全毬油氣勘探的新亮點。由于頁巖氣藏特殊的地質特徵和儲層物性,頁巖氣藏不穩定的壓力傳播方式及影響規律併沒有充分認識清楚。本文建立瞭攷慮啟動壓力梯度和賦存狀態的頁巖氣藏複閤模型,利用非齊次虛宗貝塞爾函數進行頁巖氣藏複閤模型井底壓力數學模型的求解,分析頁巖氣藏不穩定壓力傳播的規律,研究瞭頁巖氣藏井儲繫數、解吸壓縮繫數、內區滲透率、錶皮因子、啟動壓力梯度等因素的影響規律。結果錶明,對于外區滲透率相對低的頁巖氣複閤油藏中,解吸壓縮繫數、井儲繫數、內區滲透率和內區半徑是敏感因素。
혈암기장이경성위전구유기감탐적신량점。유우혈암기장특수적지질특정화저층물성,혈암기장불은정적압력전파방식급영향규률병몰유충분인식청초。본문건립료고필계동압력제도화부존상태적혈암기장복합모형,이용비제차허종패새이함수진행혈암기장복합모형정저압력수학모형적구해,분석혈암기장불은정압력전파적규률,연구료혈암기장정저계수、해흡압축계수、내구삼투솔、표피인자、계동압력제도등인소적영향규률。결과표명,대우외구삼투솔상대저적혈암기복합유장중,해흡압축계수、정저계수、내구삼투솔화내구반경시민감인소。
Shale gas reservoirs have become a new bright spot in the global oil and gas exploration .The geological characteristics and reservoir shale gas special pressure ,propagation and influence of shale gas reservoir is not stable and did not fully understand .In this paper ,considering starting pressure gradient and occurrence of shale gas reservoirs ,composite model ,by solving the non‐homogeneous virtual Bessel function of shale gas reservoirs ,complex mathematical model of bottom hole pressure model ,analyzes the shale gas unsteady pressure propagation law ,the influence of shale gas reservoirs in the area of wellbore storage coefficient ,permeability the permeability ,skin factor ,region ,starting pressure gradient ,desorption compression coefficient and gas production factors .Shale gas reservoir with low permeability of the composite region ,wellbore storage coefficient ,permeability ,permeability of inner zone region ,inner region radius and the desorption coefficient of compressibility is a sensitive factor .