抽油井防盗防气一体化技术

TECHNOLOGY OF PREVENTION OIL STOLEN AND GAS CONTROL SYNERGY IN OIL PUMPING

黄学宾 谭清贤 潘为国 董丽霞 贾宗华 陈学忠

Huang Xuebin Chen Xuezhong Tan Qingxian Pan Weiguo Dong Lixia Jia Zonghua

中原油田分公司采油一厂, 河南濮阳 457001 四川石油管理局, 四川广元 628000

文留油田由于气油比高、液面高,油井能量较充足,一些不法分子常从套管偷油窃气,影响油井正常生产。针对这一难题,研制了套管防盗油密封阀,并配套应用了井下油气分离器与气举阀助流举升工艺技术。当气液经井下分离器分离后,气体进入油套环空,并在上部防盗阀将环空密闭的情况下,压力升高到气举阀打开压力时进入油管,使油套环空压力处于动态平衡状态,从而能够同时解决防盗、防气两大难题。现场应用取得了明显效果,为类似油田开发管理提供了一条新途径。

In Wenliu Oilfield, the normal production of oil well was affected by oil stolen from casing, since the ratio of gas and oil is higher, the production fluid level is higher and the energy of oil well is more abundance. According to this problem, casing oil stolen prevention sealing valve was developed, matching with down-hole oil-gas separator and gas lift valve lift technology.After the gas-fluid has been separated by the downhole separator, the gas got into annular space of casing and tube. With the oil stolen prevention sealing valve, annular space was sealed, then the gas could get into tube when its pressure is high enough to open the gas lift valve, this made the pressure of tube-casing annular space balanced. Since field test effect is obvious, a new route was afforded to likely oilfield.

10.3969/j.issn.1000-7393.2001.05.019