Thermal Activated Resin to Avoid Pressure Build-up in Casing-Casing Annulus (CCA)

Abstract

Pressure build up between cemented casings — in drilling and production wells — has been a major challenge all around the world. The cause, in most cases, is a poor cement job that allows fluids to migrate through micro channels from the formation all the way to the surface. This problem has been solved by pumping or squeezing a polymeric based resin — with major bonding properties — that can be accurately designed for a specific setting or curing time, based on the application temperature. This resin is pumped through annular injection ports in the well head. Due to the resin's particle free characteristic, there is no restriction or plugging risk while pumping. Once the resin is pumped down the annuli into the micro channels, it will set or cure and isolate the pressure build up from the source, providing a safe working environment at the surface. Thermal activated resin is a new technology that has overcome a lot of traditional cementing problems. The resin acts as a fluid and can be designed on a wide range of weights and viscosities, and it can also be adjusted to react at a specific formation or ambient temperature. This paper presents case histories on field applications and lab tests to support the efficiency and liability of solving Casing- Casing Annulus pressure build-up scenarios in the Middle East.

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO2 Capture and Storage Process

“…Moreover, no flow pathway was built. 198 Moreover, resins have potential applications in the repair of cement failure by squeeze operations, 199 casing leaks, 200 and so on.…”

Development and performance evaluation of epoxy resin system for repairing agent

“…During the repairing process, the excellent rheological properties can satisfy the pumping requirements, and the high compressive strength, excellent ductility and corrosion resistance of cured epoxy resin make it widely used in the field of well repairing. [7][8][9][10] Jones et al 11 studied the laboratory development of a customized resin solution and restored the wellbore integrity of a Polish shale play near the Ukrainian border. They used a primary amine hardener and two kinds of epoxy resin, one for base resin and the other for lower viscosity and longer thickening time.…”

“…To ensure the sealing stability of the well, epoxy‐based fluid can be used as a repairing or cementing agent due to its low solid content and good permeability so it can be pumped deeper into microchannels than cement, 7 which can overcome many traditional cementing problems, such as CCA. The liquid phase of epoxy resin at room temperature can penetrate the fracture area and be cured under a certain temperature and hardener.…”

“…The liquid phase of epoxy resin at room temperature can penetrate the fracture area and be cured under a certain temperature and hardener. During the repairing process, the excellent rheological properties can satisfy the pumping requirements, and the high compressive strength, excellent ductility and corrosion resistance of cured epoxy resin make it widely used in the field of well repairing 7–10 . Jones et al 11 studied the laboratory development of a customized resin solution and restored the wellbore integrity of a Polish shale play near the Ukrainian border.…”

Systematic Experimental Investigation on In-Situ Self-Adaptive Sealing Property of Composite Pressure-Activated Sealant for Curing Minor Tubular Leaks

“…As the most traditional repair methods, mechanical repairs [1] and chemical sealants [2][3][4][5] have been extensively studied over the past few decades. Although these conventional methods have proven useful in curing leaks and restoring the integrity of the wellbore, there are various limitations to on-site operations.…”