Challenges in Interpreting Well Testing Data from Fractured Water Injection Wells with a Dual Storage Phenomenon

In pressure drop well test of the clasolite water injection well of Tahe oilfield, through nonlinear automatic fitting method in the multi-complex reservoir mode for water injection wells, we got layer permeability, skin factor, well bore storage coefficient and flood front radius, and then we calculated the residual oil saturation distribution. Through the examples of the four wells of Tahe oilfield analyzed by our software, we found that the method is one of the most powerful analysis tools.

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Development of an Optimized Formulation for Cleaning Water Injection Wells Drilled With Oil Based Systems

10.2118/107632-ms ◽

2007 ◽

Author(s):

Christine S.H. Dalmazzone ◽

Amandine Le Follotec ◽

Annie Audibert-Hayet ◽

Allan Jeffery Twynam ◽

Hugues M. Poitrenaud

Keyword(s):

Water Injection ◽

Injection Wells

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Short Radius Horizontal and Multilateral Re-entry of Oil and Water Injection Wells

10.2118/39246-ms ◽

1998 ◽

Author(s):

I.A. Al-Ghamdi ◽

A.A. Al-Hendi ◽

O.J. Esmail

Keyword(s):

Water Injection ◽

Injection Wells

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The Kittiwake Field, Block 21/18, UK North Sea

Geological Society London Memoirs ◽

10.1144/gsl.mem.1991.014.01.42 ◽

1991 ◽

Vol 14 (1) ◽

pp. 339-345 ◽

Cited By ~ 2

Author(s):

K. W. Glennie ◽

L. A. Armstrong

Keyword(s):

North Sea ◽

Water Injection ◽

Injection Wells ◽

Solution Gas

AbstractKittiwake was discovered by well 21/18-2 within a 7th Round block, part of Production Licence P351. Highly undersaturated oil is present in the Fulmar Formation and Skagerrak Formation reservoir sequences; 70 MMBBL of reserves is in Fulmar sandstones whereas oil in the Skagerrak is mostly immovable. The field will be developed from a single 16-slot platform with initially 5 producing and 5 water-injection wells. Solution gas is removed via the Fulmar Field pipeline to St Fergus and, as from September 1990, the oil is loaded onto tankers from a single-buoy mooring.

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Design of an Acid Stimulation System with Chlroine Dioxide for the Treatment of Water-Injection Wells

10.2118/2000-053 ◽

2000 ◽

Author(s):

A.N. Cavallaro ◽

R. Baigorria ◽

E. Curci

Keyword(s):

Water Injection ◽

Injection Wells ◽

Stimulation System

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The New Generation of Outflow Control Devices Autonomously Controlling the Conformance of Water Injection Well- A Case Study with ADNOC Onshore

10.2118/207647-ms ◽

2021 ◽

Author(s):

Sultan Ibrahim Al Shemaili ◽

Ahmed Mohamed Fawzy ◽

Elamari Assreti ◽

Mohamed El Maghraby ◽

Mojtaba Moradi ◽

...

Keyword(s):

Oil Recovery ◽

Dynamic Properties ◽

Short Circuit ◽

Water Injection ◽

Performance Outcomes ◽

Injection Well ◽

Well Performance ◽

Injection Wells ◽

Horizontal Section ◽

Control Devices

Abstract Several techniques have been applied to improve the water conformance of injection wells to eventually improve field oil recovery. Standalone Passive flow control devices or these devices combined with Sliding sleeves have been successful to improve the conformance in the wells, however, they may fail to provide the required performance in the reservoirs with complex/dynamic properties including propagating/dilating fractures or faults and may also require intervention. This is mainly because the continuously increasing contrast in the injectivity of a section with the feature compared to the rest of the well causes diverting a great portion of the injected fluid into the thief zone which ultimately creates short-circuit to the nearby producer wells. The new autonomous injection device overcomes this issue by selectively choking the injection of fluid into the growing fractures crossing the well. Once a predefined upper flowrate limit is reached at the zone, the valves autonomously close. Well A has been injecting water into reservoir B for several years. It has been recognised from the surveys that the well passes through two major faults and the other two features/fractures with huge uncertainty around their properties. The use of the autonomous valve was considered the best solution to control the water conformance in this well. The device initially operates as a normal passive outflow control valve, and if the injected flowrate flowing through the valve exceeds a designed limit, the device will automatically shut off. This provides the advantage of controlling the faults and fractures in case they were highly conductive as compared to other sections of the well and also once these zones are closed, the device enables the fluid to be distributed to other sections of the well, thereby improving the overall injection conformance. A comprehensive study was performed to change the existing dual completion to a single completion and determine the optimum completion design for delivering the targeted rate for the well while taking into account the huge uncertainty around the faults and features properties. The retrofitted completion including 9 joints with Autonomous valves and 5 joints with Bypass ICD valves were installed in the horizontal section of the well in six compartments separated with five swell packers. The completion was installed in mid-2020 and the well has been on the injection since September 2020. The well performance outcomes show that new completion has successfully delivered the target rate. Also, the data from a PLT survey performed in Feb 2021 shows that the valves have successfully minimised the outflow toward the faults and fractures. This allows achieving the optimised well performance autonomously as the impacts of thief zones on the injected fluid conformance is mitigated and a balanced-prescribed injection distribution is maintained. This paper presents the results from one of the early installations of the valves in a water injection well in the Middle East for ADNOC onshore. The paper discusses the applied completion design workflow as well as some field performance and PLT data.

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