Cement Retainer

Vigor Composite Cement Retainer

Vigor Composite Cement Retainer is a scientifically designed, structurally mature downhole plugging tool with a compact outer diameter and large inner bore. It is suitable for vertical, highly deviated, or horizontal wells in both land and offshore drilling operations, facilitating cement squeezing or plugging agent injection to seal and repair casings.

Compared to other types of cement retainers, this model features a smaller diameter, enabling faster and simpler deployment. Its segmented composite slips, combined with an anti-premature-setting ring, ensure easy drillability. The composite tapered body, packing elements, and other components form a reliable sealing system between the casing and the sealing assembly.

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Description

Vigor Composite Cement Retainer is a nonmetallic high-quality tool used primarily for cement squeezes. It has multiple uses, including primary and remedial cementing, well control, and temporary abandonment, thereby eliminating storage requirements if separate tools were required for each operation.

The composite retainer exhibits dramatically decreased removal times compared to standard cast iron retainers, resulting in longer bit life and decreased casing wear due to removal. This is achieved by the nonmetallic composition of the retainer, which provides faster drillability without sacrificing performance. The high-tech materials that make up the components of the composite retainer resist corrosion, are lightweight, and ensure a longer life in high-temperature wells. No adhesives are used to connect its components during construction.

The composite retainer easily converts to a bridge plug. The mating surfaces at the top and bottom of the plug rotationally lock drilled-out remnants, decreasing drillout time.

China Vigor 5 inch Composite Cement Retainer

Function and Purpose

A. Isolation of Wellbore Zones

The primary function of a cement retainer is to create a robust and impermeable barrier between different wellbore zones. In the context of well construction and completion, a wellbore is often drilled through multiple geological formations, each with distinct characteristics such as pressure, fluid composition, and permeability. Cement retainers are strategically placed within the wellbore to isolate these zones, preventing the unwanted intermingling of fluids. This isolation is critical for maintaining the integrity of each zone, optimizing reservoir performance, and avoiding complications such as crossflow between production and injection zones.

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B. Prevention of Fluid Mixing

Fluid mixing in a wellbore can lead to a range of undesirable consequences, including the contamination of production fluids, compromised reservoir pressure, and the potential for wellbore damage. Cement retainers act as a barrier to prevent the migration of fluids between zones, ensuring that the produced hydrocarbons remain uncontaminated and maintaining the reservoir’s natural balance. By halting the flow of water, gas, or other fluids across different formations, cement retainers contribute to the preservation of reservoir characteristics and the overall economic viability of the well.

C. Role in Wellbore Construction and Completion

During wellbore construction, cement retainers are a fundamental component of the primary cementing process. After drilling, steel casing runs into the wellbore, and the annular space between the casing and the formation is filled with cement. Cement retainers help create a reliable seal, ensuring that the cement is placed precisely where needed to isolate specific zones. In the completion phase, cement retainers may be utilized in the installation of various downhole equipment, such as packers, to further enhance zonal isolation and well integrity.

In summary, the function and purpose of cement retainers revolve around their pivotal role in isolating different wellbore zones, preventing fluid mixing, and contributing to the overall success of well construction and completion operations in the oil and gas industry.

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Features

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- Compact design with high-pressure resistance.

- Easy drillability and milling.

- Single-trip operation enhances efficiency and reduces costs.

- Reliable bidirectional anchoring and sealing performance.

Structure And Working Principle

- Primary Cementing Jobs

- Remedial Operations

- Wellbore Integrity and Efficiency

- Selective Zonal Isolation

- Contribution to Hydraulic Fracturing

- Completions with Downhole Equipment

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Operation Method

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Vigor Composite Cement Retainer is run in conjunction with a setting tool and an insert pipe attached to the tool’s front end. The insert pipe’s inner bore is

equipped with a sliding sleeve valve, which is opened or closed by applying pressure from the work string via a drop ball, allowing bidirectional pressure control.

- Upon reaching the target depth, the squeeze path remains open for circulation.

- Before setting, a ball is dropped onto the sliding sleeve seat to seal the passage.

- When the applied pressure reaches a predetermined value, the retainer sets, and the sliding sleeve opens, initiating cement or plugging agent injection.

- After injection, the insert pipe is retrieved, and its front-end sealing plug closes the lower passage, isolating the cement/plugging agent below the retainer from the pressure and well fluids above.

Technical Parameter

Casing		Product Model	Retainer Size			Casing I.D.		Release Force	Max. Operating Pressure
O.D.	Grade		O.D.	Length	Squeeze Bore	Min.	Max.	KN	MPa
In.	Lbs/ft		mm	mm	mm	mm	mm
4-1/2	9.5-13.5#	TY90JZ	91	1050	20	97.1	103.8	120	50
5-1/2	15.5~23#	TY110JZ	114	1050	30	118.6	125.7	150	50
7	17-32#	TY145JZ	145	1250	40	154.8	166.1	180	50

About VIGOR

China Vigor Drilling Oil Tools and Equipment Co., Ltd.

Vigor is committed to researching, developing, manufacturing, and selling high-tech downhole tools and equipment. Our focus is on utilizing advanced technologies to help our customers reduce the costs of oil and gas exploration, production, and completion while keeping up with the development of the world's energy industry.

VIGOR'S MISSION

We continue to promote the development of the world's energy industry with high quality and innovative models.

VIGOR'S VISION

Become a century-old enterprise in the energy industry, serving 1000 leading enterprises in the energy industry worldwide.

VIGOR'S VALUES

Team spirit, innovation and change, focus, integrity, and live our dream true!

Company History

Vigor is always your reliable partner in the oil and gas industry.

Vigor expanded our manufacturing facilities in different locations of China which help us to serve the customers with swift delivery, diversity and efficiency of production. All our manufacturing facilities meet and exceed APl and international quality standards.

With a solid background, experiences, full support from the engineering team, and high efficiency in production, Vigor has established stable and long terms cooperation with well-known international companies from the US, Canada, Colombia, Argentina, Brazil, Mexico, Italy, Norway, UAE, Oman, Egypt, Saudi Arabia and Nigeria, Etc.

Vigor R&D Certificates

Vigor team has consistently prioritized investment in product research and development. In 2017, several new products developed by Vigor were successfully tested and widely promoted, with advanced technological offerings being adopted in bulk by clients on-site. By 2019, our modular disposable guns and site selection perforating series had been successfully deployed in client wells. In 2022, Vigor invested in a high-tech tool manufacturing plant to further enhance our production capabilities.

Our commitment to the R&D, production, and testing of new products remains unwavering. If you are interested in industry-leading products or technologies, do not hesitate to contact our professional technical team.