Comprehensive Diagnostic and Water Shut-off in Open and Cased Hole Carbonate Horizontal Wells

Al-Shabibi, Hussain; Ahmad, Haji Nawawi Haji; Zeybek, Murat; Malik, Shauket

doi:10.2118/162287-ms

Cited by 20 publications

(12 citation statements)

References 7 publications

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“…From the above discussion, it is apparent that timely and appropriate remedial action in controlling excess water production is crucial for improving well performance and saving the wells from premature closure (Al-Shabibi et al 2012). Controlling water production in complex horizontal wells with the existing conductive fractures, especially vertical ones, such as in fractured carbonate reservoirs, is an extremely difficult task to perform.…”

Section: Introductionmentioning

confidence: 99%

Controlling excess water production in fractured carbonate reservoirs: chemical zonal protection design

Ghosh

Ali

Belhaj

2020

J Petrol Explor Prod Technol

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Fractured carbonate reservoirs are prone to premature water cut production at the early stage of recovery. Conventionally completed long horizontal wells, suffering from high water cut through fracture networks, need reliable and cost-effective treatment solutions to control water entry, without damaging oil-saturated segments. Protection of oil flow channels from polymer gel invasion could be a challenge in complex fractured reservoirs because of the enormity of the number of zones that may require damage protection. In this work, a chemical package system is developed, comprising three different chemical solutions. The first fluid is designed to protect the low-permeable oil-saturated zones by creating an impermeable barrier while keeping the water conductive fractures open, followed by a gelant, designed to invade, solidify, and seal off the water conductive fractures. The third treatment is designed for a complete dissolution of the protective barrier created by the first fluid. The effectiveness of this process is evaluated through a set of four core flood studies at reservoir conditions. It was observed that whereas the effective brine permeability could be reduced by 74-91%, oil effective permeability is reduced by 12-17% depending on the fracture aperture. The paper also discusses the key parameters to be addressed for successful field implementation of this technology.

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Section: Introductionmentioning

confidence: 99%

Controlling excess water production in fractured carbonate reservoirs: chemical zonal protection design

Ghosh

Ali

Belhaj

2020

J Petrol Explor Prod Technol

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“…1 The excess water production may occur through different mechanisms, including water coning or channeling such as water flow through highpermeability layers, 2 casing leak and cement failure, open fracture or fault, and perforation intervals in hydrocarbon− water transition zones. 3 Each of these mechanisms requires taking especial remediation strategies to achieve an effective solution. 4 Different chemicals including resins, 6−8 silicate in situ gels, 9,10 cement, 2 in situ polymerized composite substances, 11 and polymer gels 12 have been proposed to treat excessive water production.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, lifting, separation, treatment, and disposing of the produced excess water impose a remarkable operational cost . The excess water production may occur through different mechanisms, including water coning or channeling such as water flow through high-permeability layers, casing leak and cement failure, open fracture or fault, and perforation intervals in hydrocarbon–water transition zones . Each of these mechanisms requires taking especial remediation strategies to achieve an effective solution. , …”

Section: Introductionmentioning

confidence: 99%

Swelling Behavior of Carboxymethylchitosan-Based Nanocomposite Hydrogels in Response to Different Stimuli (Salinity, pH, and Temperature) and the Gels’ Microfluidic Capability for Water Shut-Off Applications

Hassani,

Hosseinpour,

Bidgoli

2024

Energy Fuels

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Controlling excessive water production in oil and gas wells is still a challenge needing to be addressed, especially via advanced polymer gel technologies. In this work, a biocompatible and naturally available polymer was employed to prepare nanocomposite hydrogels for water shut-off applications. A chitosan biopolymer was functionalized at first, and then, hydrogels were prepared by the addition of an organic cross-linker and nanoadditives of graphene-oxide (GO) and functionalized carbon nanotubes (CNTs). Grinding and mechanical sieving were then employed to prepare preformed particle gels (PPGs). The thermal stability and mechanical strength of the PPGs were assessed. The volumetric swelling ratio (SR) of the PPGs as a function of pH, salinity, and temperature was mapped using the full factorial design of experiments. Finally, a microfracture connected to a uniform matrix structure was laser-etched on glass to investigate the plugging performance and water shut-off capability of the PPGs. Results indicate that the thermal stability and mechanical strength of the PPGs are improved significantly by the addition of the nanostructures. The SR of the PPGs is found to be a function of salinity and pH, and no significant impact of the temperature is detected. The SR increases by 95% when the salinity and pH are altered from 20 000 ppm and 5.5 to 200 000 ppm and 7.5, respectively. This means that, despite a 10-fold growth in salinity, the PPGs swell up with the pH increase. The residual resistance factor, representing the plugging efficiency, increases from 956 to 1134 and 1173 by the addition of CNT and GO into the gel structure, respectively. The nanostructure surface sites bond to the polymer functional groups, leading to the construction of the gel structures resistant to salinity, temperature, and load pressure. As a conclusion, the biocompatible nanocomposite PPGs are found to be capable candidates for water shut-off applications.

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“…For example, if the well is a gas lifted, the amount of gas injected to lift the fluid column from the wellbore to the surface is higher with the production of excessive water than without producing it. Water production also enhances the presence of scales, corrosions and degradation in the field facilities starting from the wellbore completions to the surface facilities [2]. Another major problem is the cost of separating, treating and disposing the produced water, which is a great burden over the oil company budgets.…”

Section: Introductionmentioning

confidence: 99%

Importance of Water Chemistry in Oil and Gas Operations—Properties and Composition

Taha¹,

Amani²

2019

IJOC

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In the oil and gas industry, water is essential element since it exists in most of the stages, starting from drilling operations, then production processes including injecting in the reservoir to maintain the pressure, and finally disposing the produced water from the reservoir. Therefore, it is very important to understand the water in the petroleum industry with its different types and study its effects on the reservoirs as well as the downhole and surface equipment. Most of the studies and literature reviews focused on the oil and gas properties. In fact, understanding the properties of the water is as important as the oil and gas properties. Water is always present in the oil and gas fields during production, injection or disposal. Therefore, it has a direct impact on the productivity and overall efficiency of the field and the entire development project. This paper is going to illustrate and focus on several objectives. First, it elaborates the importance of the water in the oil and gas fields. Then, it includes a comprehensive overview of different types of water in the petroleum industry including a summary about of their properties. The main two types that the paper focuses on are the produced water and the injected water. It clarifies the effects of both of them on the reservoir, well completions and facilities. After that, the paper touches bases on the common problems and issues caused by water along with a brief summary of steps needed by the operators to follow in order to solve them. In addition to that, the common monitoring procedures and tests that are usually followed to observe the quality of the water are going to be presented. Finally, couples of solutions used by operators are reviewed to solve the problem of excessive water production after the water breakthrough in the field.

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Comprehensive Diagnostic and Water Shut-off in Open and Cased Hole Carbonate Horizontal Wells

Cited by 20 publications

References 7 publications

Controlling excess water production in fractured carbonate reservoirs: chemical zonal protection design

Controlling excess water production in fractured carbonate reservoirs: chemical zonal protection design

Swelling Behavior of Carboxymethylchitosan-Based Nanocomposite Hydrogels in Response to Different Stimuli (Salinity, pH, and Temperature) and the Gels’ Microfluidic Capability for Water Shut-Off Applications

Importance of Water Chemistry in Oil and Gas Operations—Properties and Composition

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