... Introduction to Distributed Temperature Sensing and the Raman Effect: Leak detection across well completions is a critical operation in the oil and gas industry. The failure of well barriers can lead to uncontrolled hydrocarbon releases, posing significant risks to personnel and the environment...

... a distinct condition in which a leak in the horizontal section exist and was addressed by setting a plug below the leak then employing a specialized nano-silica mixture to chemically seal the leak before punching the tubing. HEX plug was deployed using coiled tubing and set below leak point. At first stage...

... liquified natural gas (lng) asia government ship frequency indonesia government risk management consequence scenario assessment lng fuel system design engine diameter scenario node leak marine transportation freight & logistics services hazard emission imo explosion dual-fuel engine...

..., called "bandage cementing", and it was successful in repairing casing leaks near the surface with over 75% success rate. The focus of this technique is to build a column of cement in annulus between production casing and surface casing to create a "bandage" covering all leaking points in production...

... to be different from standard gas underground storage. The approach is based on two main steps. In theory, hydrogen presents a higher capacity to leak through seals compared to methane or helium. In the first step, several gases are investigated to assess the sealability capacity of a connection with a metal...

... these undesired/unplanned fluid movement in the wellbore and also indicate cement quality in annulus by running in tubing prior to P&A campaign in rig-less mode. The technology responsible to determine hydraulic seal consists of full-spectrum acoustics sensors that accurately identifies downhole leak or flow...

... Abstract Offshore terminal usually performs crude oil lifting process regularly every 7-8 days. However, three repetitive leaks in crude oil subsea pipeline 36" MOL SPM-1 to SPM-2 occurred in the offshore terminal area had stopped the natural oil lifting process. Due to complex conditions, leak...

... casing leaks but none were successful. It was the first time that a sealant system provided a solution to repair a casing leak and hold a high pressure differential. During recompletion, the production packer failed to set but the operator decided to initiate production. A annulus pressure increased...

...Problem Statement Abstract Gas leak at surface wellhead equipment can contribute to a major incident if not contain immediately. High intervention cost and long lead time for wellhead replacement then required operator to find fast fit for purposes solution to avoid extended loss...

... in time with the fluid flow regime changing from turbulent to laminar with a corresponding change of friction pressure drop. One should also account for fluid which continuously leaks to the fracture(s). These factors lead to a continuous increase of the apparent period of the WH wave with the number...

... of the APS allowed for more than 150 downward jars through the tight restriction to deploy to depth. Despite the significant jarring, the APS was successfully set and the post-operation leak detection proved the straddle integrity. The paper will look at the qualification tests done on the equipment...

.../8" packer and/or a leak in the tubing. Further well integrity diagnostic surveys were run to confirm the downhole temperature profile and detect the source of the temperature anomaly. Given the nature of Well-A's completion, a flowmeter log could not pinpoint the source of leak. As an alternative...

... not be evaluated as only relevant as a means of HSE management but also a means of cost management and in sustaining or increasing overall production. downhole intervention Upstream Oil & Gas wellbore integrity production enhancement Well Intervention leak detection Leak petronas carigali sdn bhd...

... the pressure build-up failed, the operator initiated further investigation, which confirmed the suspicion. Small tubing leaks that were allowing produced gas inside the tubing to seep through to the annulus were found. These leaks could have allowed the pressure to increase, and possibly, could have caused...

... the field. The logging program was originally planned inside tubing with surface pressures of 1,800 psi but it was decided to log inside casing (without tubing) because leak was more severe than predicted (1 m3/min of leak rate). In wells A and B, leak points at 630 m and 225 m were identified...

.... These risks are primarily associated with (a) contamination due to drilling wastes (muds, produced waters, byproducts, etc.); emissions from drilling sites and potential runoffs, (b) natural gas/oil leaks and spills, and (c) direct effects on human health. The drilling fluids circulated through the well hole...

... maintenance materials and corrosion midstream oil & gas production chemistry well integrity subsurface corrosion risk and uncertainty assessment corrosion management piping simulation risk management h2s management project management subsea system society corrosion inhibition leak...

... Abstract The paper describes the use of a pressure activated sealant technology to cure leaks in subsea wellbore equipment and control systems. The benefit of this technology is that use of an injectable pressure activated sealant to cure leaks provides a safe, cost-effective alternative...

... proved to be efficient methods to reduce water production by isolating watered out zones in the ONWJ field. However, the operation of this job can be more complicated when done in multiple packer completion or in dual completion cases, especially when the tubing has leaks in order to avoid the cement...

..., consequently, the overriding objective was to evaluate changes in operating procedure which would provide an equivalent level of safety to that of installing a sub-sea isolation valve. Three methods – simple analytical, approximate and rigorous numerical simulation were used to predict leak rates in case...