CAJ | 학술논문

胜利油区目前处于高含水和特高含水阶段，从经济效益的角度出发，根据油田的实际生产资料，依据盈亏平衡原理，同时考虑税金、成本上涨率等因素，建立了经济极限含水的定量关系式，并分别对胜利油田老区高渗透和低渗透两大类油藏，从常规成本、最低成本两种条件下对经济极限含水进行了测算验证。对中高渗透油田，如当油价为900元／t，单井产液量为60 ～420t／d时，常规成本条件下，经济极限含水从93.39％上升到97.79％,关井界限(产油量)为3.97～9.27t／d；最低成本条件下，经济极限含水从96.41％上升到98.23％,关井界限为2.15～7.45t／d。对低渗透油田，当油价为900元／吨，单井产液量为10～50t／d时，常规成本条件下，经济极限含水从75.39％上升到91.58％，关井界限为2.46～4.21t／d ，最低成本条件下，经济极限含水从88.95％上升到94.29％，关井界限为1.1～2.86t／d。油井经济极限含水的定量计算可为油田开发决策和生产运行提供可靠的科学依据。图2表1(于乐香摘)
성리유구목전처우고함수화특고함수계단，종경제효익적각도출발，근거유전적실제생산자료，의거영우평형원리，동시고필세금、성본상창솔등인소，건립료경제겁한함수적정량관계식，병분별대성리유전로구고삼투화저삼투량대류유장，종상규성본、최저성본량충조건하대경제겁한함수진행료측산험증。대중고삼투유전，여당유개위900원／t，단정산액량위60 ～420t／d시，상규성본조건하，경제겁한함수종93.39％상승도97.79％,관정계한(산유량)위3.97～9.27t／d；최저성본조건하，경제겁한함수종96.41％상승도98.23％,관정계한위2.15～7.45t／d。대저삼투유전，당유개위900원／둔，단정산액량위10～50t／d시，상규성본조건하，경제겁한함수종75.39％상승도91.58％，관정계한위2.46～4.21t／d ，최저성본조건하，경제겁한함수종88.95％상승도94.29％，관정계한위1.1～2.86t／d。유정경제겁한함수적정량계산가위유전개발결책화생산운행제공가고적과학의거。도2표1(우악향적)
Shengli oil field now is at high and special high water-cut oil production stage. From economic benefit, on the basis of specific production data and on the principle of the profit and loss balance, and taking factors such as the growth rate of tax and cost into account, the authors develop the formula of the economic limit water-cut. Mature region of Shengli oil field is divided into two kinds of reservoir, high permeability reservoirs and low permeability reservoirs, and their economic limit water-cuts are predicted and tested under the conventional cost and lowest cost circumstances. For medium-high permeability reservoir, if oil price is at RMB￥900/t and liquid production of single well is 60-420t/d, ecnomic limit water cut increases from 93.39% to 97.79%, and shut-in limit is between 3.97t/d and 9.27t/d under conventional cost circumstance, while ecnomic limit water cut increases from 96.41% to 98.23% and shut-in limit is between 2.15t/d and 7.45t/d under the lowest cost circumstance; For low-permeability reservoir, if oil price is at RMB ￥900/t and liquid production of single well ranges from 10t/d to 50t/d, ecnomic limit water-cut increases from 75.39% to 91.58% and shut-in limit is between 2.46t/d and 4.21t/d under conventional cost circumstance, while ecnomic limit water-cut increases from 88.95% to 94.29% and shut-in limit is between 1.1t/d and 2.86t/d under the lowest cost circumstance. The results of the study may provide the reliable and scientific basis for development policy decision and production.