Title

Study of the Additives in Acidizing in Bonan Oilfield

作者

聂新村1 　田承村1 　许大星1 　张贵才2

Authors

Nie Xincun ,Tian Chengcun , Xu Daxing,et al.

单位

1. 胜利油田有限公司河口采油厂　2.石油大学,东营

摘要

针对渤南油田含油层系多、主力单层厚度大、平面上迭合连片、原油性质好、埋藏深,渗透性差、自然能量和吸水能力低等特点,评价了渤南油田酸化中铁离子二次沉淀、酸化淤渣产生量、防膨剂和助排剂的作用、酸液导致润湿反转的程度、酸液(乏酸) 对原有的乳化作用等,在此基础上筛选了适合渤南油田的铁离子稳定剂、防酸化淤渣剂、粘土防膨剂、助排剂、润湿反转剂(互溶剂) 和防乳破乳剂,并评价了各添加剂在酸化中的作用,为同类型低渗透油藏的开发提供了科学依据。

Abstract

It had been found that Bonan Oilfield had many

characteristics , such as many oil-bearing series ,high thickness of

main producing single layer , connecting as a whole on plane ,

good property of crude oil , high depth of burial , poor

penetrability , low natural energy and water absorbing capability.

Aimed at the above characteristics , a series of evaluation work

was completed in acidizing of Bonan Oilfield , including

secondary precipitation of iron ion , acid sludge formation

quantity , effect of anti-clay-swelling agent and cleanup additive ,

extent of wettability reversion induced by acid liquor ,

emulsification effect of acid liquor ( spent acid) to crude oil. On

this basis , various additives suitable for Bonan Oilfield was

optimised , including ferric ion stabilizing agent , anti-sludging

agent , anti-clay-swelling agent , cleanup additive , wettability

reversal agent (mutual solvent) , non-emulsifier and demulsifier.

Also the performance of these additives in acidizing was studied ,

which provided scientific basis for the development of similar low

permeability reservoirs.

关键词：

酸化　添加剂　低渗　渤南油田;

Keywords:

Acidizing ,Additive ,Low permeability ,Bonan oilfield.

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基金项目

DOI

渤南油田酸化添加剂研究