油气藏评价与开发
油氣藏評價與開髮
유기장평개여개발
Reservoir Evaluation and Development
2015年
5期
30-33,49
,共5页
黄全华%陈冲%皮建%王富平%杨仁锋%武静
黃全華%陳遲%皮建%王富平%楊仁鋒%武靜
황전화%진충%피건%왕부평%양인봉%무정
理论依据%拟稳态%流动物质平衡%视井底流压
理論依據%擬穩態%流動物質平衡%視井底流壓
이론의거%의은태%류동물질평형%시정저류압
theoretical basis%pseudo steady state%flowing material balance%flowing wellbore pseudo pressure
气井的地层压力和控制储量是气藏动态分析中的重要参数，为单井合理配产和开发方案制定提供了重要的依据。虽然目前计算气井地层压力时常采用不稳定试井方法，但在实际中，气井不可能频繁关井来进行压力恢复测试，并且在低能量储层及低渗透气层中，要测得准确的地层压力需要较长的关井时间，会影响到气藏的正常生产。“流动”物质平衡法则不需要关井压力数据，只需产量和井底流压即可进行分析。因此，自该方法提出以后，在气井地层压力和控制储量的评价中已经得到了广泛的应用，特别是对于低渗透气藏和海上气田，可以很好地解决地层压力测试资料较少的问题。然而，该方法在提出时并没有给出完整的理论推导。本文基于渗流力学和物质平衡原理，对该方法进行了推导，从而完善了该方法的理论依据。
氣井的地層壓力和控製儲量是氣藏動態分析中的重要參數，為單井閤理配產和開髮方案製定提供瞭重要的依據。雖然目前計算氣井地層壓力時常採用不穩定試井方法，但在實際中，氣井不可能頻繁關井來進行壓力恢複測試，併且在低能量儲層及低滲透氣層中，要測得準確的地層壓力需要較長的關井時間，會影響到氣藏的正常生產。“流動”物質平衡法則不需要關井壓力數據，隻需產量和井底流壓即可進行分析。因此，自該方法提齣以後，在氣井地層壓力和控製儲量的評價中已經得到瞭廣汎的應用，特彆是對于低滲透氣藏和海上氣田，可以很好地解決地層壓力測試資料較少的問題。然而，該方法在提齣時併沒有給齣完整的理論推導。本文基于滲流力學和物質平衡原理，對該方法進行瞭推導，從而完善瞭該方法的理論依據。
기정적지층압력화공제저량시기장동태분석중적중요삼수，위단정합리배산화개발방안제정제공료중요적의거。수연목전계산기정지층압력시상채용불은정시정방법，단재실제중，기정불가능빈번관정래진행압력회복측시，병차재저능량저층급저삼투기층중，요측득준학적지층압력수요교장적관정시간，회영향도기장적정상생산。“류동”물질평형법칙불수요관정압력수거，지수산량화정저류압즉가진행분석。인차，자해방법제출이후，재기정지층압력화공제저량적평개중이경득도료엄범적응용，특별시대우저삼투기장화해상기전，가이흔호지해결지층압력측시자료교소적문제。연이，해방법재제출시병몰유급출완정적이론추도。본문기우삼류역학화물질평형원리，대해방법진행료추도，종이완선료해방법적이론의거。
The formation pressure of gas well and controlled reserves of single well are vital parameters for the gas reservoir’s dy?namic analysis, which provide significance to the allocate reasonable production and draw up development programs. Although tran?sient pressure test is a common method to determine the formation pressure, the process of pressure build up tests need to shut the well frequently. In low energy and permeability gas reservoirs, a longer shut-in time is needed to obtain an accurate formation pres?sure even though this time may affect a normal production. The“flowing”material balance doesn’t need the shut-in pressure data;the data of production and flowing wellbore pressure is enough to analyze. Consequently, after the method is put forward, it has been widely applied in the evaluation of formation pressure of gas well and controlled reserves of single well. Especially for the low permeability gas reservoir and offshore gas field, this method can calculate the formation pressure and dynamic reserves with easily obtained wellbore pressure in spite of the few formation pressure data. However, detailed theoretical derivation is not given when the method is proposed. The method is deduced in detail based on the percolation mechanics and material balance principle, which makes the theoretical basis of the“flowing”material balance completely.
