Unlocking Oman's Tight Gas Potential using State-of-the-Art Underbalanced Coiled Tubing Drilling Technologies

2021 ◽  
Author(s):  
Stephen Lynn ◽  
Sumith Manoharan ◽  
Souhaibe Barkat ◽  
Saleh Al-Ruzeiqi ◽  
Yan Terras ◽  
...  
Keyword(s):  
State Of The Art ◽  
Integrated Management ◽  
Tight Gas ◽  
Rotary Drilling ◽  
Fully Integrated ◽  
Coiled Tubing ◽  
Underbalanced Drilling ◽  
Drilling Tools ◽  
Energy Service ◽  
Gas Potential

Abstract With the large amount of tight gas reserves remaining in Oman, new innovative techniques and methods to unlock these reserves have become imperative for the future economic success and stability of the country. Among the various technologies considered, the concept of underbalanced coiled tubing drilling (UBCTD) was introduced. In order to address the harsh downhole challenges such as high temperatures, deep burial depths, under pressured reservoirs, abrasive and hard sands and logistical constraints; a fully integrated well delivery solution was developed jointly by the operator and energy service company. In accordance with this strategy, best in class downhole drilling tools, a state-of-the-art fully automated coiled tubing drilling unit together with technical and project management experts were deployed. Application specific solutions to the challenging subsurface conditions included utilization of underbalanced drilling (UBD) techniques, deployment of high temperature drilling assemblies, fit-for-purpose bit drive mechanism and a robust integrated management system. All of the above was achieved whilst ensuring the safety of all personnel during the project and reducing carbon emissions through a flare minimization strategy and diesel consumption reduction initiatives. Over the course of the pilot campaign, reservoir exposure per well was doubled, average penetration rate compared to conventional rotary drilling was more than tripled and incremental production improvements of up to 230% were observed. This paper discusses the challenges faced and the solutions implemented during this three well pilot campaign.

Case Study of Underbalance Coiled Tubing Drilling to Increase Well Productivity and Ultimate Recovery in Tight Gas Reservoir Onshore Field, Abu Dhabi

2021 ◽  
Author(s):  
Abdelhak Ladmia ◽  
Martin Culen ◽  
Abdulla Bakheet Al Katheeri ◽  
Fahad Mustfa Al Hosani ◽  
Graham F. Edmonstone ◽  
...  
Keyword(s):  
United Arab Emirates ◽  
Drilling Fluid ◽  
Abu Dhabi ◽  
Christmas Tree ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Reservoir Performance ◽  
Coiled Tubing ◽  
Underbalanced Drilling ◽  
Tight Gas Reservoir

Abstract Coiled Tubing Drilling (CTD) has been growing and developed rapidly through the last two decades. There have been numerous highly successful applications of CTD technology in Alaska, Canada, Oman and the United Arab Emirates (Sharjah Sajaa and Dubai Murgham fields), among other places. Currently, Saudi Arabia has undertaken a campaign for the last seven years that has shown successful results in gas reservoirs. ADNOC initiated a trial Coiled Tubing Underbalanced Drilling (CTUBD) project in the onshore tight gas reservoirs in Abu Dhabi, United Arab Emirates beginning operations 1-December-2019. The initial trial will consist of three (3) wells. The purpose of the trial is to assess the suitability of CTUBD for drilling the reservoir sections of wells in these fields, and further application in others. The reason for choosing coiled tubing for drilling the reservoir sections is based upon the high H2S content of the reservoir fluids and the premise that HSE can be enhanced by using a closed drilling system rather than an open conventional system. The three wells will be newly drilled, cased and cemented down to top reservoir by a conventional rig. The rig will run the completion and Christmas tree before moving off and allowing the coiled tubing rig to move onto the well. The coiled tubing BOPs will be rigged up on top of the Christmas tree and a drilling BHA will be deployed through the completion to drill the reservoir lateral. The wells will be drilled underbalanced to aid reservoir performance and to allow hole cleaning with returns being taken up the coiled tubing / tubing annulus. The returns will be routed to a closed separation system with produced gas and condensate being primarily exported to the field plant via the production line, solids sparge to a closed tank or pit and the drilling fluid re-circulated. The primary drilling fluid will be treated water; however, nitrogen may be required for drilling future wells in the field and will be required regardless for purging gas from the surface equipment during operations. A flare will also be required for emergency use and for start-up of drilling. If the trial proves a success, a continuous drilling plan will be put in place.

State-of-the-Art Coiled Tubing Technology at Prudhoe Bay, Alaska

2007 ◽  
Author(s):  
Jennifer Yvonne Julian ◽  
Kirk Charles Forcade ◽  
Taylor L. West ◽  
Kevin yeager ◽  
Robert Lee Mielke ◽  
...  
Keyword(s):  
State Of The Art ◽  
Coiled Tubing ◽  
Prudhoe Bay

St. Stephen's Hospital Hervey Bay

2016 ◽  
pp. 127-153
Author(s):  
Constance A. Harmsen ◽  
Richard N. Royle
Keyword(s):  
Medical Record ◽  
Electronic Medical Record ◽  
State Of The Art ◽  
Fully Integrated

St Stephen's Hospital in Hervey Bay, Queensland, Australia, is a new 96 bed state of the art digital hospital that opened on a greenfield site on 13 October 2014. The eHealth project was responsible for providing a fully integrated electronic medical record. The authors explore the unique challenges presented by the project and the solutions deployed. Key components related to the success of the project are identified. The results of the intense two and half year project timeline culminated in a successful go-live and certification as the first hospital in Australia to achieve Stage 6 HIMSS designation.

The State of the Art in Management Studies Applicable to Aerospace Activities

1967 ◽  
Vol 71 (677) ◽  
pp. 338-342
Author(s):  
G. P. Dollimore
Keyword(s):  
State Of The Art ◽  
Integrated Management ◽  
The State ◽  
The Other ◽  
Medium Size ◽  
General Management ◽  
Management Techniques ◽  
A Company

Perhaps I should start as earlier speakers have done with a disclaimer to the effect that I am not putting my thoughts forward as those of an expert in all fields of management. I am perhaps fortunate in having been concerned with projects which lend themselves to experiments in the use of integrated management techniques, and also in the operation of a company which, because of its medium size—a thousand or so strong—and its type of business, is just large enough on one hand to justify a reasonably sophisticated approach to general management and, on the other, small enough for one to see the effects of changes in approach. It is on this basis that I shall make my comments.

Regulatory Issues of Digital I&C System in Lungmen Project

2004 ◽  
Author(s):  
C. F. Chuang ◽  
H. P. Chou
Keyword(s):  
Nuclear Power ◽  
State Of The Art ◽  
Lessons Learned ◽  
Digital Design ◽  
Regulatory Requirements ◽  
Power Station ◽  
Fully Integrated ◽  
Regulatory Issues ◽  
Under Construction ◽  
And Control

The Lungmen Nuclear Power Station (LNPS) is currently under construction in Taiwan, which consists of two advanced boiling water reactor (ABWR) units. The instrumentation and control (I&C) systems of the LNPS are based on the state-of-the-art modernized fully integrated digital design. This paper presents regulatory overviews, regulatory requirements, current major regulatory issues, as well as the areas of regulatory concerns and the lessons learned on the digital I&C systems in the Lungmen Project.

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