The green light for Santos Energy’s drilling program in the McArthur Basin comes after a moratorium on hydraulic fracturing in the Northern Territory was lifted in 2018. After drilling the Dorado-2 appraisal well, operator Santos Energy now expects a big increase in gas resources from predrill estimates, adding to one of the largest oil resources ever found on Australia’s North West Shelf. The complete paper proposes an azimuthal plane-wave-destruction (AzPWD) seismic-diffraction-imaging work flow to efficiently emphasize small-scale features associated with subsurface discontinuities such as faults, channel edges, and fracture swarms. This paper contrasts the detailed perforating and flowback plan with the results of the operation where a number of planned, and some unplanned, contingencies were faced. A hybrid downhole microseismic and microdeformation array was deployed to monitor fracture stimulation of a vertical coal-seam-gas (CSG) exploration well in the Gloucester Basin in New South Wales, Australia, to provide more-accurate insight into overall fracture height.
When a rig is stacked, its owner has two choices: spend millions to keep it in good shape, or let it rust out. These two companies describe what it is like to maintain their assets for the day that a contract comes. This paper shows how a new approach to small fields could unlock more than twice the net present value (NPV) of larger conventional fields in Southeast Asia at a similar level of capital expenditure (CAPEX). This paper reviews the efforts to exploit CBM resources in Indonesia, the challenges these efforts have faced, and possible solutions that can make operations more efficient and profitable. This paper presents a literature review to determine the engineering challenges and opportunities presented by CBM production in China.
A joint effort between the Society of Petroleum Engineers (SPE), American Association of Petroleum Geologists (AAPG) and the Society of Exploration Geophysicists (SEG), the Asia Pacific Unconventional Resources Technology (Asia Pacific URTeC) 2019 will take place from 18 – 19 November 2019 in Brisbane, Australia. The rise of unconventional resources in North America has been a powerful catalyst in changing the world oil and gas supply landscape to meet growing energy demand. Over the past decades, the industry has also witnessed increased activities in the Asia Pacific (APAC) region and Eastern Hemisphere. Coal seam gas (CSG) to LNG developments in Australia, and shale gas and CSG developments in other APAC and MEA countries have proven that unconventionals can be commercially viable in our region and have afforded an opportunity for many operating companies to further invest in developing efficient and effective techniques to recover tight gas, CSG and shale gas. As we continue to explore new opportunities, we must address challenges unique to the APAC region during unconventional exploration and development.
This course offers insights on reservoir characterization approaches, integrated development planning methods, uncertainty management techniques, and modeling workflows accumulated through the experience of a number of CBM plays. Selection will also be reviewed, including approaches to model the performance of different well and completion configurations and implementing these into a full field modeling strategy. Techniques to assess the economic potential of the play will be illustrated, including methods for high-grading development areas into sectors of different attractiveness. Learn how to model the performance of different well and completion configurations and implement them into a full field model strategy. This introductory course is for geologists, reservoir engineers, subsurface managers, and team leaders.
Conventional oil and gas discovered resources in 2019 are on pace to rise 30% from last year and reach their highest level since the beginning of the industry downturn. Here, a recap of the first quarter's 15 biggest oil and gas discoveries, which altogether are propelling the increase. This paper reviews the efforts to exploit CBM resources in Indonesia, the challenges these efforts have faced, and possible solutions that can make operations more efficient and profitable. Although multiple-zone, downhole sand-control-tool systems have been in use since the early 1990s, these systems have been designed for jobs that require only low pump rates with low pressure differentials. VICO Indonesia is the operator of the Sanga-Sanga production-sharing contract (PSC) in Indonesia.
Content of PetroWiki is intended for personal use only and to supplement, not replace, engineering judgment. SPE disclaims any and all liability for your use of such content. Hydrocarbons from unconventional and more difficult to produce resources such as shale gas, shale oil, tight gas, and tight oil, coal seam gas/coalbed methane and hydrates.
Coalbed methane (CBM) is adsorbed onto the coal surfaces exposed through the matrix microporosity and the naturally occurring fracture or cleat system. This cleat system typically is water-filled, often with fresh or slightly saline water, but may also contain some free gas. Calculation of gas-in-place for a unit volume of the coal layers being developed does not follow the "porous media" approach of determining effective: Instead, the gas-in-place is measured physically through the recovery of coal samples, the number and distribution of which are important to the estimation of total gas in place pertinent to the property being evaluated. Cored samples are transferred carefully from the core barrel to canisters, which are sealed immediately and transported to an analysis laboratory. In analysis, two measurements are taken.