Risk analysis method of continuous air emissions from wells with sustained casinghead pressure

Document Type

Conference Proceeding

Publication Date

7-28-2005

Abstract

Well cement problems such as small cracks or channels can result in gas migration and lead to sustained pressure at casingheads (SCP). Regulations require removal of significant SCP while tolerating small SCP during production operations. However, SCP of any size must be removed prior to well plugging and abandonment (P&A) as it is believed that even very small leaks might lead to continuous emissions of gas to the atmosphere. In some wells, however, small gas leaks may diminish in time as the gas migration channels are plugged off by the gas condensate. Thus, the objective of this work was to develop a method for computing potential of self-plugging in wells with SCP using priciples of phase behavior and theory of two-phase flow in small channels. Copyright 2005, Society of Petroleum Engineers Inc.

Publication Source (Journal or Book title)

SPE/EPA/DOE Exploration and Production Environmental Conference, Proceedings

First Page

445

Last Page

456

This document is currently not available here.

Share

COinS