... 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...

... Figure 4 , showing the cement volume representation behind 9-5/8-inch liner. While the primary objective is investigating the cement condition behind the 13-3/8-inch casing, the secondary objective which is to determine the cement volume behind 9-5/8-inch can also be done within the same logging...

..., yet the interactions between hydrogen, brine, and cement, particularly with chemical additives, remain insufficiently understood. This study addresses this gap by investigating the effects of hydrogen and brine on the mineralogy and microstructure of cement with and without chemical additives. We...

... Abstract Geopolymer cement technology was developed as alternative cement system that can withstand harsh acidic environment normally encountered in Carbon Capture Storage (CCS) fields or high CO 2 gas fields. It is also environmentally friendly technology as the processes converts fly ash...

... and often associated with a low probability of long-term success. Available conventional technologies and techniques mostly use cement as a plugging material. However, steel has several advantages over cement, such as a higher tensile strength, enabling stronger structures with less material; cement...

... Abstract The unique characteristics of Portland cement in terms of properties, availability and cost does not allow it to be replaced in many cases. However, there is a certainty about the properties of Portland cement in the long term because of thermodynamical instability of cement...

... Abstract During the water injector workover campaign in 2018, some casing leakage near the surface was identified (depth range 10 to 300 ftRT). Several attempts were made to seal the leakage, but none of them succeeded. In response to investigation, a specific cementing technique was developed...

... Abstract Annular Wash Cement Assurance (AWCA) has been used for several years as a cost-effective tool for Permanent Abandonment (P&A) of oil/gas wells to remediate cement behind casings in lieu of Section milling to establish a rock-to-rock barrier. In order to verify AWCA result...

... for both planning and executing the jobs. A major benefit of the cup-type Perforate, Wash and Cement method is based on a closed loop from the surface pumps, where the flow goes through the cups and perforations into the casing annulus, before going out of the perforations again and back up to surface...

... of water chemistry that affect the mineral dissolution/precipitation and cement degradation ( Table 4 ). For pH, compared to the initial conditions, the cement hydration (reactions with brine only) increases the pH to 10.469. The potential reason may contribute to the greater H + consumption within...

.... Traditional methods of plugging a well for abandonment purposes include the running of a permanent plug device, most often constructed of cast iron, by means of the drill pipe on a work unit. This plug setting is followed by the placement of cement, either above the plug inside of the string of pipe being...

..., different viscosity models are applied to compare the estimation of yield stress for each material. Material Four different cementitious materials are studied: neat API class G, rock-based geopolymer, rapid hardening cement and gas tight cement. The summary of the material is presented in Table 1...

... Shallow gas has been one of the major challenges in petroleum exploration and production during the well construction process. The issue of shallow gas migration through cement was initially raised in the 1960s during the cementing of gas storage wells ( Tinsley et al., 1980 ). Since then, many...

... characterization risk and uncertainty assessment wellbore integrity complex reservoir subsurface storage reservoir geomechanics risk management drillstem testing climate change sustainable development social responsibility liquefied natural gas upstream oil & gas sequestration cement leakage...

... 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...

... Abstract Cement Packer is a cost-effective alternative to workover for monetizing hydrocarbon reservoirs above the well top packer. While conventional cement packer utilizes coil tubing for cement placement, an innovative and more cost-effective approach was successfully implemented with only...

... Abstract Well abandonment has traditionally not been thought of as a crucial part of a well’s life, though it is as much a part of a well’s life cycle as drilling and production. As such, traditional methods of abandoning a well utilizing cement and bridge plugs are still common practice among...

... Collaborative efforts were made by the Subsurface and Wells team along with the Cementing Service and Specialty Oil Service providers to plan and successfully execute two (2) Perforate, Wash and Cement jobs, using the Closed Loop Cup Type system under challenging wellbore conditions. Well...

... cement and bond evaluation upstream oil & gas patterson completion installation and operations cement log analysis well decommissioning free pipe well logging casing and cementing cement condition new cement evaluation technology enable southeast asia case study cement...

... The technique is commonly used in permanent abandonment where there is insufficient confidence in the cement content of the annulus at the desired barrier depth, or where there is evidence of a leak path to surface from a hydrocarbon bearing formation such as sustained annulus pressure...