第39参第1期 2017年1月
石油钻采工艺
OIL DRILLING & PRODUCTION TECHNOLOGY
文章编号：10007393(2017）01009706
DOI:10.13639/j.odpt.2017.01.019
川西积液水平井井筒压力及液位预测
刘通12郭新江’王雨生’陈海龙’鲁光亮’唐勇3
Vol. 39 No. 1 Jan.2017
1.中国石化西南油气分公司博士后工作站；2.中国石化西南油气分公司石油工程技术研完院；3.中国石化西南油气分公司川西来气厂引用格式：刘通，部新江，王雨生，陈海龙，鲁光亮，唐勇.川西积液水平井井筒压力及液住预测[J].石油钻采工艺，2017
39(1): 97-102.
摘要：正确预测积液水平并并简压力与液位是优选排液工艺、制定排液参数的技术关键。基于U型管原理，结合流体静力学与动力学方程，建立了积液水平并油管与油套环空压力平衡模型。模型中油管压降来源于液位以上流动气体与液位以下的两相流动，其两相流持液率基于漂移模型得到；油套环空压降则来源于液位以上的静气柱压力和液位以下的静液柱压力；油管与油套环空压力在并下连通点处相等；模型计算采用了先借助地面回声仪获得油套环空中的液住，再利用模型求解油管液位及压力的方法。川西气田什部6-1HF水平并的模型预测压力与实际测压数据的误差为3.75%，表明该方法能够正确预测川西气田积液水平并的并简压力与积液液位，且预测时效优于传统的测压方法。影响因素分析表明，油管液位通常高于环空液位，油套压差的减少能够间接反映油管积液量的减少，为类似油田的开发提供技术指导。
关键词：川西气田；水平井；积液；井筒压力；液位；漂移模型；回声仪
中图分类号：TE37
文献标识码：A
Borehole pressure and liquid level prediction of liquid-loading horizontal wells in West Sichuan
LIU Tong'2, GUO Xinjiang’, WANG Yusheng , CHEN Hailong’, LU Guangliang , TANG Yong 1. Postdoctonal Fonkstation, SINOPEC Soarhwest Or & Gas Company, Cherngdr 610041, Sichuan, China;
2. Petrolem Engineering Technology Institute, SINOPEC Sorthwest Oil & Gas Company, Deyang 618000, Sichuan, China;
3. West Sicharan Gas Producrion Planr, SINOPEC Soutinvesr Oil & Gas Company, Deyng 618000, Sicharan, China
Citation: LIU Tong, GUO Xinjiang, WANG Yusheng, CHEN Hailong, LU Guangliang, TANG Yong. Borehole pressure and liquid level prediction of liquid-loading horizontal wells in West Sichuan [ J ] . Oil Drilling & Production Technology, 2017, 39(1): 97-102.
Abstraet: The technical key to drainage technology optimization and drainage parameter determination is to predict accurately thc
borehole pressure and liquid level of liquid-loading horiz
liquid-loading horizontal well was developed model, the tubing pres
and the two-phase liquid holdu static gas column pre
the tubing-casing annulus by using one balancc
eequat
lcal
echometer, and then the liquid level and pressur
this method, the borehole presst
o/mhole roble
ssure balance model of tubing and tubing-casing annulus in
ontal wells.TheF
ore
-shape pipe principle b
using fluid statics and dynamics equations. In this
uid level and the two-phase flowing below the liquid level,
edn
n tubing werc
odel.Thetubins
-casing annulus pressure drop is derived from the
w the liquid level. The tubing pressure and
. However, two liquid level parameters cannot be solved only
tubins
annulus was measured by virtue of ground
-casing
solved by means of the model. Case study indicates that by virtue of
nd liquid loading level in liquid-loading horizontal wells in West Sichuan Gasfield can be predicted
accurately, and its prediction time efficiency is superior to that of traditional manometry. The influential factors were also analyzed. And it is indicated that the liquid level in tubing is generally higher than that in annulus, and the decrease of tubing-casing pressure difference can reflect indirectly the reduction of liquid loading volume in tubing.
Key words: West Sichuan Gasfield; horizontal well; liquid loading; borehole pressure; liquid level; drift model; echometer
基金项目：国家科技重大专项“超深层高含硫气田本平并高产稳产工艺技术研究"（编号：2016ZX05017-005-003)；油气藏地质及开发
工程国家重点实验安开发基金项目“页岩气蛇街结构水平并压后返排气液两相流动规律研究"（端号：PLN1517)。
第一作者：对通（1986-)毕业于西南石油大学沟气田开发工程专业，博士学位，现从事沟气并多相流理论以及来气工程技术的研究工作。
通讯地址：(618000)四川省德阳市龙泉山北路298号。E-mail：liutong697@126.com
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