It is one of most important tasks in modern reservoir menagement to determine the suitable injection - production ratio 摘要確定水驅(qū)開(kāi)發(fā)油藏的合理注采比是現(xiàn)代油藏管理的重要任務(wù)之一。
Injection - production ratio ( ipr ) directly affects the pressure maintenance and the productivity of reservoirs 水驅(qū)開(kāi)發(fā)油藏的注采比是否合理直接影響著油藏地層壓力保持水平及生產(chǎn)能力。
Based on the material - balance equation and the theory of injection - production balance , we derived the relationship between the pressure decline and the injection - production ratio from when the reservoir has a stable production then we proposed the suitable injection - production ratio for the production management at later stages of reservoir development with the correlation factor derived from regression analysis 利用物質(zhì)平衡方程,依據(jù)注采平衡原理,推導(dǎo)出在油減穩(wěn)定生產(chǎn)時(shí)地層壓降與注采比的關(guān)系,由實(shí)際礦場(chǎng)資料擬合出相關(guān)系數(shù),通過(guò)合理地層壓降來(lái)確定合理注采比,為油藏開(kāi)發(fā)后期生產(chǎn)管理提供依據(jù)。
In order to increase prediction accuracy of development blocks with short production history , this paper introduces multiple regression method through three following aspects : prediction of decline index and initial decline rate ; prediction of annual decline rate ; prediction of injection - production ratio 為了提高生產(chǎn)歷史較短開(kāi)發(fā)區(qū)塊的預(yù)測(cè)精度,從3個(gè)方面研究介紹了該方法的應(yīng)用情況:一是預(yù)測(cè)遞減指數(shù)和初始遞減率;二是預(yù)測(cè)年對(duì)年自然遞減率;三是預(yù)測(cè)油田注采比。