Study on the wellbore flow and phase transition during formation H2S invasion Online publication date: Wed, 29-Jan-2014
by Liangbin Dou; Gensheng Li; Zhonghou Shen; Zhongwei Huang; Xianzhi Song
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 6, No. 6, 2013
Abstract: Considering the special physical properties of hydrogen sulphide (H2S) and its phase transition in the wellbore, a mathematical model for wellbore flow and heat transfer during formation H2S invasion was established. Heat transfer and pressure were calculated along with H2S physical properties parameters, and a solution method of the model was proposed. The results indicate that liquid H2S transforms into gas state during its rising process in the annulus when choke pressure is low; the flow above phase transition point is two-phase flow while the flow below phase transition point is single-phase flow in the annulus. The paper exhibits the results and the reasons of the bottom-hole pressure and the depth of phase transition varying with different H2S influx rate, injection rate, choke pressure, and land surface temperature. The study is of certain significance for improving the safety during the exploration of acidic oil and gas reservoirs. [Received: February 21, 2012; Accepted: June 10, 2012]
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Oil, Gas and Coal Technology (IJOGCT):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook