ADVERTISEMENT

Achieving Drilling-Performance Improvement in Horizontal Tight-Gasfield Development

Fig. 1—Barik horizontal-well design

The full-field development plan for the Khazzan project in Oman is based on drilling approximately 300 wells targeting gas-producing horizons at measured depths of approximately 6000 m with 1000‑m horizontal sections. The first attempt to drill these wells had to overcome many drilling challenges, including wellbore instability and drilling dysfunctions. This paper shows how the application of existing technologies and processes is leading to performance gains and improvements in wellbore quality.

Introduction

BP has embarked on an appraisal drilling campaign that targets a tight gas reservoir in northern Oman. The subject field is an area of approximately 2800 km2 and contains the Cambrian Barik, Miqrat, and Amin reservoirs.

The field-development plan is based on a deep-horizontal-well design. When the appraisal phase began, there was very limited experience within the country in drilling deep horizontal gas wells. Other operators in Oman were mostly drilling vertical gas wells. There were no analog data available on horizontal wells in the Barik reservoir.

This article, written by Special Publications Editor Adam Wilson, contains highlights of paper SPE 166699, “Achieving Drilling-Performance Improvement in Horizontal Tight-Gasfield Development,” by Mohamed Najwani, SPE, Yaseen Najwani, SPE, and Hani Al Lawati, BP Exploration (Epsilon); Colin Cockburn, SPE, BP Exploration Operating Company; and Mohammad Reza Heidari, SPE, and Martin Sanderson, SPE, Schlumberger, prepared for the 2013 SPE/IADC Middle East Drilling Technology Conference and Exhibition, Dubai, 7–9 October. The paper has not been peer reviewed.
...
This article is reserved for SPE members and JPT subscribers.
If you would like to continue reading,
please Sign In, JOIN SPE or Subscribe to JPT

Achieving Drilling-Performance Improvement in Horizontal Tight-Gasfield Development

01 October 2014

Volume: 66 | Issue: 10

STAY CONNECTED

Don't miss out on the latest technology delivered to your email weekly.  Sign up for the JPT newsletter.  If you are not logged in, you will receive a confirmation email that you will need to click on to confirm you want to receive the newsletter.

 

ADVERTISEMENT

ADVERTISEMENT

ADVERTISEMENT

ADVERTISEMENT

ADVERTISEMENT