The Open Petroleum Engineering Journal


ISSN: 1874-8341 ― Volume 12, 2019

New Methods for Predicting Productivity and Critical Production Rate of Horizontal Wells

The Open Petroleum Engineering Journal , 2008, 1: 10-15

Hong’en Dou

RIPED, PetroChina, P.R. China.

Electronic publication date 24/4/2008
[DOI: 10.2174/1874834100801010010]


Horizontal well technology is still applied widely in the world. Some researchers and oilfield operators of horizontal wells are still using improper productivity predicting equations and critical production rate calculations. Therefore, this paper analyzes some productivity forecast equations and critical coning rate calculation procedures for horizontal wells focusing on Joshi's equation of predicting productivity and Chaperon's equation of calculating critical coning rate used in reservoir engineering. This paper suggests that effective permeability should be used in calculating horizontal well productivity and points out an error existing in Joshi's equation. It also evaluates and introduces several equations for critical production rate. Furthermore, this paper derives two new equations for predicting horizontal well productivity and a general predictive equation for horizontal well critical coning rate, applying the Mirror Effect Theory. Field applications show that the relative error between generally accepted methods of prediction are less than 17% and the new calculation method is more accurate than that of Joshi’s equation. Moreover, using actual oilfield examples, the modified Chaperon's equation was verified.

Download PDF

Track Your Manuscript:


"I have to express my sincere appreciation for your hard and professional work. Thank you very much!"

Si Zhang
Institute for Strength and Vibration of Mechanical Structures,
Yangtze University, Jingzhou,
Hubei Province,

"My experiences in publishing a paper with Bentham Open is good. I must say that the speed of publication in The Open Petroleum Engineering Journal is very fast. It takes only two month for the pioneer reviewing process. The delay was caused by me. And what’s more, the publisher’s office is quite helpful. I guess they are dealing with thousands emails every week, but they process my request in a very short period of time."

Xin Ma
School of Science, Southwest Petroleum University, Chengdu, China

Browse Contents

Webmaster Contact:
Copyright © 2021 Bentham Open