稠油热采加注环烷酸盐矿场试验

PILOT TEST OF NAPHTHENATE ADDITIVE IN HEAVY OIL THERMAL RECOVERY.

在研究克拉玛依石化厂减压馏分（馏程３００～４９０℃）环烷酸成盐工艺基础上，分析了该馏分环烷酸盐作为热采蒸汽吞吐添加剂提高热采井产油量的各项性能后认为，环烷酸盐成盐工艺简单、产品成本低廉，各项性能指标达到了热采添加剂的技术要求。在室内研究的基础上，中试生产了９０ｔ环烷酸盐工业产品。在采油一厂稠油作业区实施了１８口热采井加注环烷酸盐矿场试验。矿场试验达到了预期的效果，有效井１２口，试验成功率６６％有效井共增产原油１６４４ｔ，共创收入１７５．９０８×１０４元，１８口井矿场试验总投入经费４０．０５×１０４元，总投入产出比达到１∶４以上，取得了较好的经济效益，是为降低稠油热采成本而开发的一种有效、廉价的新型表面活性剂。

The technology of salt production from the vaccum fraction(distillation range 300～490 ℃)—naphthenic acid at Karamay Petrochemical Plant was examined, together with the EOR performances of naphthenate additive in steam stimulation process. The results showed that salt production is easily operated, cheap and fully meets the technical requirements for the additives in thermal recovery. Based on laboratory research results, 90 t naphthenate has been available by trial production. Pilot test of naphthenate additive injection into 18 thermal recovery wells was undertaken in the heavy oil productive area operated by No. 1 Oil Production Plant. The results are as expected. Among them, 12 wells have a total additional production of 1 644 t, with input output ratio of 1∶4. It is suggested that naphthenate is a novel effective and cheap surfactant for thermal heavy oil recovery.