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・784・

新疆石油地质

2008短

结构破坏产生二次沉淀,对储集层造成伤害。而在酸

化设计中酸液类型和酸液质量分数是根据储集层的

具体特性来定的。

(4)模拟关井时间不合理酸敏评价标准规定做

砂岩酸敏感性实验模拟关井时间为:包括注酸在内的

酸反应时间为l h.实际酸化中关井时间要根据储集

层岩石学特征、地层温度、酸液类型等因素综合确定。

(5)注酸量不舍理酸敏评价标准规定做砂岩盐

酸酸敏感性实验注入0.5一1.0倍孑L隙体积质量分数为

15%的HCl.实际酸化中用酸量要根据储集层特征、

酸液类型、地层伤害情况等因素综合确定。

4结论

(1)现行的酸敏评价标准在实验设计中考虑油藏

酸化措施的实际过程不足,故不合理处较多。

(2)原酸敏评价标准不能作为储集层能否实施酸

化和酸化是否有效的依据。只要合理确定酸液配方和

适当的酸化工艺,酸敏性储集层酸化也会取得很好

的酸化效果。

(3)应考虑对“SY厂r 5358—2002储层敏感性流动

实验评价方法”进一步修订和完善。

参考文献:

[1]

[2]

[3]

[4]

[5]

SY,r

5358—2002储集层敏感性流动实验评价方法.

Bryant S乙BuUer D

C.Formation damage

from

acid

treatment

[J].SPE

Production Engineering,1990,l 1:455-460.

Hartman R

Leceff B.Frenier

W,et耐.Acid

sensitive

aluminosilicates:dissolution

kinetics and fluid

selection

for

matrix stimulation

treatments[J].SPE

82267,2003.

贺承祖,华明琪.酸敏研究进展[J】.钻井液与完井液,

20()2,19(4):33-36

Baker

C,Uwins P

R,Mackinnon I D R.ESEM study of

authigenic

chlorite acid

sensitivity

in sandstone reservoim

[J].J.ofPetr01.Sei.and

Eng.,1993,8(3):269-277.

0n Acid Sensitivity Standards:Defects Analysis

LIU Hong—xian,ZHAO Li・qiang,CHEN

ji・mei,LIU

Ping-li

(Institute

of Petroleum

Engineering,Southwest

Petroleum

University,Cbengdu,Sichuan 610500,China)

Abstract:The

reservoir of

Chang-6

formation in Ansai oilfield has hish

content

of

acid

sensitive

minerals.The result of

acid

sensitivity

evaluation shows that it belongs

to

medium-weak

acid

sensitivity.So

for

long time acid treatment

WaS

considered

tO

have

no

feasibility.

On the

basis

of the abundant experimental studies,the organic acidizing field

test

is

performed,obtaining

good

result of stimulation.

This proves that the acid treatment is feasible in this reservoir.This paper anMyzes the defects in

acid

sensitivity standards from the

rock/

acid reaction

mechanism and

experimental

methods and points

out

existing

results

from

acid sensitivity evaluations

cannot

be

as the

judged

bases for

performing

acid treatment in this reservoir.

Key

Words:standard;sandstone;acidizing;organic

acid;evaluation

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(上接第757页)

文章编号:1001—3873(2008)06--0756一EA

Clay

Mineral

Analysis and

Some Problems

of Application

In Petroleum Geology

ZHAO Xing-yuan,HE Dong-bo

(Research

Institute

of

Petroleum Exploration

and Development,PetroChina,Beijing 100083,China)

Abstract:Clay mineral

analysis

has been widely applied in

the

studies of

petroleum

geology,exploitation,drilling and

production

engineering.In

clay

mineral

laboratory

experiments,it

is

systematic

procedure

from

sampling,pretreatment

to

analysis

and

identification.Any problem in the procedure

will cause

error or

incorrect understanding of given identified

results.This

paper

illustrates

such

possible

problems

and

offers corresponding

resolves.Taking

rock

diagenetic

stage division

and oil threshold

determination

aS

examples,this paper reveals the

practicable

conditions

and

application

limitation using the clay mineral

analysis

in

petroleum

geologic

study.

Key

Words:clay

mineral;analysis;identification;systematical

procedure;petroleum

geology;application

limitation

 

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