... Milling and Cement, as well as Perf, Wash, and Cement. The PWB method was identified as more efficient and timesaving. Abstract This paper presents the first Plug and Abandonment (P&A) operation in Malaysia that utilized Bismuth Alloy as an innovative abandonment material. The operator employed...

... their performance by computed tomography (CT) coreflooding experiments using Fontainebleau sandstone core plugs. These nanoparticles altered the wettability of the organic acid-aged sandstone rock representative substrate sample from intermediate wet (advancing brine contact angle - 90-108°) to strongly water wet...

... Abstract A productive offshore/onshore oil well had to be closed because a slickline plug set/retrieval operation failed, leaving tool-string and isolation plug being stuck at a depth downhole. In order to free the tool, a heavy-duty fishing operation was carried out using an electric wireline...

... for in-situ gelation assessment. In the bidirectional displacement test, the polymer solution was alternately injected from both ends of a three-plug composite core with gel pre-placed in the middle plug. In the continuous injection test, a slug of gel was kept at dynamic flow condition in a slim tube...

... of temporary plug and abandonment using workover barge is tubing removal, casing removal, and cement plug. To have sufficient power to retrieve tubing and casing, heavy workover unit with capability 225klbs was utilized in swamp area. Slickline and electricline unit in small barge was used to set bridge...

...Introduction Plug and abandonment for the operator in Brunei Darussalam involves having a permanent isolation at the caprock (typically a shale formation) placed at a depth where the formation has a rock strength and ability to withstand the maximum anticipated pressure for long term isolation...

... the damage mechanisms associated with existing wells. A sample of the RDIF used to drill the existing wells was obtained. Static PPA and dynamic WCT with reservoir core plug samples allowed for a base case result. An assessment into the RDIF, and specifically the bridging package, can then be optimised via...

... pack well. It requires proper zone isolation of closed zone such as setting plug, tubing patch, or squeezed cement. Therefore, optimum zone management need to be identified to be consistent with cost efficiency effort. Study in determining optimum zone management captured two nearly identic case of 3...

... Abstract Ensuring long-term integrity of existing plugged and abandoned (P&A) and active wells that penetrated the selected CO 2 storage reservoir is the key to reduce leakage risks along the wellpath for long-term containment sustainability. Restoring the well integrity, when required...

... of setting tubing plug in deep wells. Pump out plug was considered as an option but then dropped due to high hydrostatic pressure. The packer setting pressure was too close to plug shear pressure. Therefore, a self-disappearing plug was utilized as it did not require any slickline intervention and can...

... diversion pill was developed during extensive testing, and its performance was validated in the laboratory using a slot test. The goal was to create a system with reliable bridging ability and low permeability to ensure isolation. Multimodal particles help to ensure effective bridging and plug stability...

... Abstract Setting multiple plugs across a horizontal well can be a challenge. One way to do this is using the "pump and pull" methodology to achieve the objectives set out by the project team. Tailoring of the cement slurries and the execution of cementing operations for the successful...

... conventional wiper plugs. These offline adapters are compatible with both mandrel and slip hangers and have pressure bleed off and monitoring capabilities. These steps were then repeated in all of the wells, from the surface casing till the tubing of these mono bore completions. Besides that, production...

... useful in evaluating hydrate blockage propensity in future gas hydrate production. flow assurance offshore methane hydrate production test prediction hydrate upstream oil & gas flow rate experiment production line simulation production test plug hydrate growth rate flexible hose...

... moved off. PW&C remediation operations then commenced with the rig returning ~40 days later. Table 1 below summarizes the well parameters that defined the PW&C plug operations. Added complexity resulted from; high wellbore temperatures, medium wellbore inclinations, synthetic based fluid...

... Abstract It has been reported that hydraulic fracturing treatments with smaller cluster spacing and larger fracturing fluids volumes yield better production performance in Permian Basin, Bakken, and Eagle Ford. Degradable diverting agents can play an important role as temporary plugging...

... product may be good – Plugging material and drilling fluid should be compatible. Cement is water based, that is best matched by a WBM – Rig rates in the North Sea region are high. That means that most cost saving is connected to efficiency. This is the background for the high QA focus, to get...

... A was completed with a cemented lateral, and it was decided to complete with the plug-and-perf method for fracturing purposes to get the well on commercial production. There were three offset horizontal wells in the area, wells B, C, and D, and they were studied before finalizing the plan for candidate well...

... formations, high fluid loss squeeze pills have seen some success in reducing losses by forming a high compressive strength plug, but these pills do not have a good success rate in large fractures or vugular formations. Such challenges are better addressed by cross-linking pills, but even this solution does...

... dynamics corey coefficient reservoir simulation endpoint mbc model reservoir characterization upstream oil & gas rwmax sample lam-2 relative permeability lab space mbc formulation extrapolation option 2 plug model space pore-throat distribution formulation Introduction Relative...