Well Integrity Management System (WIMS

All Days, 2009

Challenges associated in developing mature offshore fields of Saudi Arabia require the optimal integration of best reservoir management practices. Such complicated fields require effective collaboration between reservoir engineers and geoscientists for the application of latest technologies and best practices. A variety of practices were implemented to achieve significant improvements in drilling and completing horizontal wells. Some of these challenges have been addressed with the installation of over 200 inflow control devices (ICD) which are used to minimize water coning and gas cusping affects. Economic development of these offshore projects have involved the implementation of 20 Smart wells, in conjunction with, intelligent field monitoring that improves surveillance and reduces manpower requirements. Real-time geo-steering practices, advanced logging measurements, and seismic imaging techniques were successfully utilized for well placement of over 100 horizontal wells in a geo...

Advanced Technologies in Earth Sciences, 2012

The implementation of an underground CO 2 storage requires evidence 9 that the storage is and will remain tight in the future. This refers to the cap rock and 10 the wells penetrating it. Assessment and verification of well integrity of accessible 11 wells is technically possible. The available methods, allowing a direct assessment, 12 were evaluated and a measurement and testing strategy is proposed. Unlike acces-13 sible wells, already plugged ones require predictive methods for their assessment.

Introduction to well

Safety Science, 2016

Assurance of well integrity is critical and important in all stages of operation of oil and gas reservoirs. In this study, well integrity is modeled during casing and cementing operations. Two different approaches are adapted to model potential failure scenarios. The first approach analyzes failure scenarios using bowtie model which offers a better visual representation of the logical relationships among the contributing factors through Boolean gates. The second approach takes advantage of Bayesian network, both to model conditional dependencies and to perform probability updating. The analysis identified managed pressure drilling system, logging tool, slurry formulation, casing design, casing handling and running method, surge and swab pressures as critical elements of the well integrity model. A diagnostic analysis on the slurry formulation further identified pilot test(s) and the interpretation of the test(s) as key elements to ensuring integrity of cementing operation. Relevant safety functions and inherent safety principles to improve well integrity operations are also explored.

Well control problems plagued the petroleum industry since it is infancy and known as losses of valuable resources, costs increasing, environmental damages, personnel casualties. The objective of this research is to develop well control strategy for block-8 depending on Twakul-1 well analysis of control problem occurred. Studying the wire line data to determine high pressure regions then confirm the pressure points data using well test data. Wire line data have been matches with each other justifying normal trend lines exist in subnormal region. Based on pressure analysis resulted balanced and safe mud weights were illustrated. Volumetric stripping method has been applied to kill the well. It is a complex technique combining volumetric method and stripping operation. It is worth mentioning; this method not common in the oil industry and is the first time to be applied in the Sudan. Well control strategy has been developed to help prevent and ease of dealing with such problems in future for Block-8, Dindir-Sudan. This well control strategy include four sections as equipments, alarms, procedures and training at rig site. Finally; it is a future prospective to have Sudanese well control, blowout and fire fighting strategies.

The Leading Edge, 2004

2019

Managed pressure drilling (MPD) is a technique utilized in drilling to manage annular pressure, hold reservoir influx, and divert mud returns away safely from the rig floor through a closed loop system. Thus, MPD plays key roles in well control operations and in drilling deepwater wells. However, despite the operational, safety, and economic benefits, limited information is available on understanding the complexity of MPD system. Furthermore, the oil and gas industry currently relies on a flow monitoring system for earlier kick detection but faces severe flaws and limited progress has been made on approach that monitors kick from downhole due to the complexity of offshore drilling operations. Thus, the main objective of this research is to assess the safety and reliability of MPD. In this research, following novel contributions have been made: several dynamic downhole drilling parameters have been identified to enhance earlier kick detection technique during drilling, including abou...

OTC Brasil, 2013

This paper was selected for presentation by an OTC program committee following review of information contained in an abstract submitted by the author(s). Contents of the paper have not been reviewed by the Offshore Technology Conference and are subject to correction by the author(s). The material does not necessarily reflect any position of the Offshore Technology Conference, its officers, or members. Electronic reproduction, distribution, or storage of any part of this paper without the written consent of the Offshore Technology Conference is prohibited. Permission to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of OTC copyright.

Sba: Controle & Automação Sociedade Brasileira de Automatica, 2011

Artificial lifting in oil industry uses a variety of methods and specific automation equipments for each method. Supervisory systems to these processes are usually specific for a unique method and/or for a unique manufacturer. To avoid this problem, it has been developed a supervisory system named SISAL, conceived for supervising wells with different lift methods and different automation equipments. SISAL is now in operation in several Brazilian states. This work shows how this system has been developed and presents some details of the SISAL's modules dealing with the artificial lift method called Plunger Lift.

SPE Drilling & Completion, 2006

Summary Routinely, specialist software is used to perform tasks such as casing design and directional collision-avoidance scans. If undetected, a serious failure in the development or use of any one of these products could result in loss of life or catastrophic environmental damage. Such an event would jeopardize the oil company's licence to operate (Thorogood 1994) and would seriously damage the software vendor's credibility. The drilling-and well-services software industry has matured over the last 5 years. During this period we have witnessed many commercial and technical changes, including further consolidation of the oil majors, the meteoric growth of Web-based tools, and the increased complexity of the software and types of wells being drilled. Commercial pressures also mean fewer resources are available to perform these tasks. Unless managed, it is clear these changes greatly increase the risk of a serious incident. BP and Landmark have conducted a series of joint aud...