Research and Successful Field Application of Nanosilica System for Gas Shutoff in Horizontal Well

Almohsin, Ayman; Hashem, Hassan A.; Sadah, Ali; Mahtani, Mesfer

doi:10.2118/211471-ms

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…They have been effective in both low- and high-temperature reservoirs with varying particle sizes and concentrations. Nano-silica is an eco-friendly material that has been utilized by oil producers for water and gas shutoff applications. , Nano-silica treatments can be easily injected and exhibit good thermal stability up to 350 °F. ,, …”

Section: Utilizing Nanomaterials For Enhancing Gel Treatmentsmentioning

confidence: 99%

“…Nano-silica is an eco-friendly material that has been utilized by oil producers for water and gas shutoff applications. 171,172 Nano-silica treatments can be easily injected and exhibit good thermal stability up to 350 °F. 140,173,174 Nano-silica was successfully field tested in a horizontal oil producer.…”

Section: Pam Cross-linked With Nn′-methylenebis(acrylamide)mentioning

confidence: 99%

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A Review of Recent Developments in Nanomaterial Agents for Water Shutoff in Hydrocarbon Wells

Ali,

Alabdrabalnabi,

Ramadan

et al. 2024

ACS Omega

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Reducing water production from hydrocarbon wells is one of the major requirements to prolong the life span of production wells. Gel treatment is commonly regarded as one of the traditional cost-effective methods for water shut-off applications. Different gel systems have been developed to overcome the challenges of performing a successful water shutoff treatment. Each gel system has its advantages and disadvantages. A new proposed technology is to enhance the gel performance by utilizing nanomaterials in its composition. Nanomaterials such as nanosilica, nanoclay, and graphene can significantly modify gel properties to improve plugging efficiency. This paper provides a brief review of the added value of using nanomaterials in the structure of polymer in situ gel, preformed particle−gel, and nanosilica-based fluid. Nanomaterials such as nanoclay, nanosilica, and nanographene are capable of adjusting the properties of in situ gel, such as control of gelation time (9−10) hours and enhancing gel strength up to 4.5 times. Nanomaterials also improved the swelling ratio of the preformed particle−gel by up to 400%, accompanied by increased gel strength. Notably, nanosilica-based gels exhibit an exceptional plugging efficiency (100%). Additionally, the paper discusses how modeling can be used to overcome operational challenges in terms of placement and plugging performance.

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Section: Utilizing Nanomaterials For Enhancing Gel Treatmentsmentioning

confidence: 99%

Section: Pam Cross-linked With Nn′-methylenebis(acrylamide)mentioning

confidence: 99%

A Review of Recent Developments in Nanomaterial Agents for Water Shutoff in Hydrocarbon Wells

Ali,

Alabdrabalnabi,

Ramadan

et al. 2024

ACS Omega

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“…The gas isolation screen is formed from nanosilica gel, which transforms into a glass-like body in the formation. This approach allows for controlling gas inflow in wells drilled in dense rock formations [4][5][6]. Considering that the object of our study, the PK 1−3 formation of the Vostochno-Messoyakhskoye field, is a weakly cemented sandstone, this approach does not apply to it.…”

Section: Introductionmentioning

confidence: 99%

Use of Self-Generating Foam Gel Composition with Subsequent Injection of Hydrogel to Limit Gas Inflow in Horizontal Wells of Vostochno-Messoyakhskoye Field

Telin,

Karazeev,

Vezhnin

et al. 2024

Gels

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Gas inflow control in oil wells is one of the most challenging types of repair and sealing operations, the success rate of which does not exceed, as a rule, 30%. Conventional shutoff methods are often ineffective for this purpose. For instance, cement solutions cannot be injected into wells in the required volumes, while gel screens can only temporarily block the breakthrough zones, as gas easily seeps through the gel, forming new channels for gas inflow. Technology for the two-stage injection of gas-insulating gel systems for gas control in horizontal wells was developed. At the first stage, a self-generating foam gel composition (FGC), consisting of gel-forming and gas-forming compositions, was used. A foam gel structure with enhanced rheological and flow characteristics was formed over a controlled time as a result of the interaction between the gel-forming and gas-forming compounds. A PAM-based hydrogel crosslinked with an organic crosslinker was added to the FGC at the second stage of treatment. The laboratory experiments substantiated the technology of well gas and water shutoff by the sequential injection of self-generating foam gel composition and hydrogel. Field tests confirmed the correctness of the chosen concept. It is very important to clearly identify the sources of gas inflow for the success of this well intervention and take into account the well design, as well as the reservoir geological structure and characteristics. The gas shutoff operation can be properly designed for each well only by comparing all these factors. The validity of the selected technology was tested through a series of laboratory experiments. Successful laboratory tests allowed for the application of the studied technology in a field setting, where the gas shutoff agent was injected into three horizontal wells. As a result of the field application, the gas inflow was successfully isolated in two wells. However, the application of the technology failed in the third well which gave an opportunity to revisit the technology’s design and to review the sources of gas inflow. Overall, the achieved success rate of 66% demonstrated the high efficiency of the studied technology and supported its wider application in the field.

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An Experimental Approach of a Robust Polymer Gels for Water Shutoff Applications in Carbonate Formations

Alabdrabalnabi

Almohsin

Busaleh

et al. 2023

Day 2 Tue, March 14, 2023

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Controlling unwanted water production is the key for the oil and gas industry. Consequently, water shutoff (WSO) fluids were introduced to favorably plug high permeability water zones or fractures and thereby reducing the water cut. Polymer gels have been utilized extensively to minimize undesired water production, especially from oil producers. Herein we present the study of gelation kinetics of an organically crosslinked polymer (OCP) gel with an adsorption system from intermediate to high reservoir temperatures. In this study, we utilized a cost-effective and environmentally acceptable fluid system. The fluid consists of polymer gel and adsorption constituents for carbonate formations. The system can be pumped downhole to the targeted zones as a single-phase solution with low initial viscosity. A systematic evaluation of the polymer gel for WSO applications is conducted at varied reservoir conditions. This includes a thorough examination of fluid properties at surface conditions before gelation starts, at which the system is referred to as gellant. Furthermore, we studied the properties during and after gelation kicks off at a wide range of temperatures. The emphasis of the experimental investigation was on the kinetics of OCP gelation through performing several rheology experiments at various crosslinker concentrations. The analysis revealed that the viscosity of the gellant at standard conditions was less than 20 cP; thereby, this contributes positively to having smooth surface mixing and pumping requirements for field testing. Based on reservoir temperature and cooling effect, the gelation time can be optimized by altering crosslinker concentrations. At fixed temperatures and varied crosslinker ratios, the gelation time exhibited a linear relationship with crosslinker concentrations. Additionally, the gelation time against temperature experienced an exponential behavior with reversible proportionality. By plotting the acquired data from massive rheological tests, we managed to attain precise correlations of gelation time for each OCP formulation. The gel prevailed in a high thermal stability fluid system to be gelled at a temperature of more than 250°F. Based on the presented lab observations, we concluded that this polymer gel system is expected to be trial tested in the field as WSO fluid for carbonate rocks. The OCP gel is a promising technology to mitigate excess water production from oil producers. Since the system has a low initial viscosity, it can be injected naturally in porous media. The presented work offers an insightful polymer gel system as a WSO fluid designed for treating carbonate rocks.

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Research and Successful Field Application of Nanosilica System for Gas Shutoff in Horizontal Well

Cited by 3 publications

References 8 publications

A Review of Recent Developments in Nanomaterial Agents for Water Shutoff in Hydrocarbon Wells

A Review of Recent Developments in Nanomaterial Agents for Water Shutoff in Hydrocarbon Wells

Use of Self-Generating Foam Gel Composition with Subsequent Injection of Hydrogel to Limit Gas Inflow in Horizontal Wells of Vostochno-Messoyakhskoye Field

An Experimental Approach of a Robust Polymer Gels for Water Shutoff Applications in Carbonate Formations

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