Transient pressure analysis of horizontal well in low permeability oil reservoir
by Yu-Long Zhao; Lie-Hui Zhang; Jin-Zhou Zhao; Shu-Yong Hu; Bo-Ning Zhang
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 10, No. 1, 2015

Abstract: Low permeability reservoirs occupy a large proportion in the remaining reserves all over the world. So, it is urgent to research the seepage law of fluid flow in low permeability reservoirs intensively. Fluid flow in these reservoirs deviates from the classical Darcy law and conforms to the one of nonlinear seepage instead. Horizontal well is one of the key technologies to exploit the low permeability reservoir. According to this characteristic, this paper presents a mathematical model for the analysis of pressure behaviour of a horizontal well in low permeability reservoirs, which takes into consideration of threshold pressure gradient (TPG). The solution of the non-homogeneous Bessel equation is obtained through Laplace and Fourier cosine transform and the Green Function methods. Integrating along the horizontal well and using Stehfest numerical inversion method, the dimensionless pressure response and type curves of horizontal well with the consideration of TPG are obtained, and the sensitivities of related parameters are discussed. The results of this paper have significance in the well test analysis, production performance prediction and production data analysis of horizontal well in low permeability reservoirs. [Received: June 17, 2013; Accepted: July 21, 2013]

Online publication date: Fri, 26-Jun-2015

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
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:

Username:        Password:          Forgotten your 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