Gel-Cement Combination Squeezes For Gas Shutoff

Lai, Qiuying; Bond, A.J.; Cahalane, T.W.; Carpenter, R.B.; Newhouse, D.P.; Singh, T.; Styler, James W.

doi:10.2118/54596-ms

Cited by 19 publications

(2 citation statements)

References 7 publications

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“…Each method is effective in shutting off only specific water paths, and they could be classified into two types: Mechanical methods involve placing a tool of high mechanical strength or cement into the wellbore to shut off the unwanted water source. The mechanical tools involve retrievable and straddle packers, − plugs, tubing patches, and squeeze cementing. − They are preferred for treating near wellbore problems such as channels behind casing or casing and tubing leaks. The advantage of the mechanical methods is that the effect will appear in a short time and is relatively inexpensive compared to other solutions. , However, they are not feasible for treating reservoir-related sources such as fractures or high permeability zones .…”

Section: History Of Water Problemmentioning

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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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: History Of Water Problemmentioning

confidence: 99%

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

Ali,

Alabdrabalnabi,

Ramadan

et al. 2024

ACS Omega

View full text Add to dashboard Cite

show abstract

“…Gas and water shut off treatments involving polymer gels alone were also performed, but the long term profile modifications desired were only achieved on a few jobs; typical lives were on the order of 9 months for gels alone (Loveland and Bond 1996). Several combination polymer gel and Class G gas shut off cement squeezes were also performed throughout the later 1990s with relatively good results noted, particularly for second or third squeezes of failed cement squeezes that were initially performed with Class G cement only (Lai et al 1999).…”

Section: Introductionmentioning

confidence: 99%

Coiled Tubing Deployed Gas and Water Shutoffs in Alaska Utilizing a Polymer Gel and Microfine Cement

Robertson¹,

Brown

Duong³

et al. 2015

SPE/ICoTA Coiled Tubing &Amp; Well Intervention Conference &Amp; Exhibition

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A common problem in oil and gas wells is excess free gas or water production from only certain portions of the completed interval. Other portions of the lower completion may still have viable oil or gas production potential if a method can be devised to successfully shut off the unwanted fluids. A coiled tubing deployed profile modification technique was developed primarily to shut off excess free gas production from the heel of cased and perforated horizontal oil wells. The technique has also been used for water and gas shut-off in both vertical and horizontal wells in a variety of lower completion types. The technique involves installing a temporary plug back to protect the toe or bottom most perforations to be preserved, then pumping a polymer gel followed immediately by a microfine cement to shut off the shallower or heel perforations. The objective of the gel and cement is to intentionally damage the rock matrix for a radius of~2 ft around the perforated intervals to be shut off, creating a zone of little or no permeability adjacent to the wellbore. If successfully executed, there is no cement to be milled out of the liner post squeeze and no restrictions or liner diameter reduction after the job. Approximately 30 horizontal wells have had a cumulative total of almost 13,000 ft of perforated intervals squeezed with this method. The technique has also been used to shut off liner corrosion leaks in horizontal wells and for perforation shut off in deviated wells. Post-job production logs in several of the wells indicated little or no flow from the squeezed intervals even 1 to 2 years after the job.

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Near well-bore sealing in the Bečej CO2 reservoir: Field tests of a silicate based sealant

Wiese

Fleury

Basić³

et al. 2019

International Journal of Greenhouse Gas Control

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Gel-Cement Combination Squeezes For Gas Shutoff

Abstract: This paper was prepared for presentation at the 1999 SPE Western Regional Meeting held in Anchorage, Alaska, 26–28 May 1999.

Cited by 19 publications

References 7 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

Coiled Tubing Deployed Gas and Water Shutoffs in Alaska Utilizing a Polymer Gel and Microfine Cement

Near well-bore sealing in the Bečej CO2 reservoir: Field tests of a silicate based sealant

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