The effect of gas production from deeper conventional gas reservoirs on shallower gas hydrate layer stability: A case study in the conditions of the Sakarya gas field, Western Black Sea

2021 ◽  
pp. 104103
Author(s):  
Hakki Aydin ◽  
Sukru Merey
Keyword(s):  
Black Sea ◽  
Gas Hydrate ◽  
Gas Production ◽  
Gas Reservoirs ◽  
Gas Field ◽  
Hydrate Layer

Genesis and Spatial Distribution of Interlayer in Tight Gas Reservoirs: A Case Study from the Lower Cretaceous Sandstones, Songliao Basin, China

2014 ◽  
Vol 962-965 ◽  
pp. 591-594
Author(s):  
Xiao Yu Yu ◽  
Peng Hui Zhang ◽  
Guo Yi Zhang ◽  
Fang Ding ◽  
Ning Ning Meng ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Gas Production ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Gas Field ◽  
Rock Body ◽  
Reservoir Sandstones ◽  
Matching Relation

Interlayer is a kind of rock body that reflects the seepage barrier in the reservoir sandstones. As the interlayer playing a blocking role of hydrocarbon accumulation, we can better understand the characteristics of the reservoir heterogeneity through the analysis of the causes and spatial distribution of the interlayer. Empirically, identification of four types of interlayer, including muddy interlayer, calcium interlayer, physical layer, and indistinguishable interlayer, contributes to effective production of tight gas sandstones. Each category of interlayer has a separate characteristic of the lithology and logging curves. Identifying interlayer provides a way to analyzing spatial distribution of interlayer in the tight gas field. 2-D and 3-D geological models corresponding to the distribution of interlayer can be able to establish to characterize distribution variations within the reservoirs, which show the space matching relation serving for the tight gas production.

A Dynamic Workflow of Well Health Issue Prediction – Sulfur Deposition

2021 ◽  
Author(s):  
Bashirul Haq
Keyword(s):  
Material Balance ◽  
Gas Production ◽  
Health Issue ◽  
Sulfur Deposition ◽  
Gas Reservoirs ◽  
Gas Field ◽  
Actual Performance ◽  
Sulphur Deposition ◽  
Balance Analysis ◽  
Sour Gas

Abstract Sour gas reservoirs are vital sources for natural gas production. Sulphur deposition in the reservoir reduces a considerable amount of gas production due to permeability reduction. Consequently, well health monitoring and early prediction of Sulphur deposition are crucial for effective gas production from a sour gas reservoir. Dynamic gas material balance analysis is a useful technique in calculating gas initially in place utilizing the flowing wellhead or bottom hole pressures and rates during the well's lifetime. The approach did not apply to monitor a producing gas's health well and detect Sulphur deposition. This work aims to (i) modify dynamic gas material balance equation by adding the Sulphur deposition term, (ii) build a model to predict and validate the issue utilizing the modified equation. A unique form of the flowing material balance is developed by including Sulphur residue term. The curve fitting tool and modified flowing gas material balance are applied to predict well-expected behaviour. The variation between expected and actual performance indicates the health issue of a well. Initial, individual components of the model are tested. Then the model is validated with the known values. The workflow is applied to active gas field and correctly detected the health issue. The novel workflow can accurately predict Sulphur evidence. Besides,the workflow can notify the production engineers to take corrective measures about the subject. Keywords: Sulfur deposition, Dynamic gas material balance analysis, Workflow

Research and Application of Material Corrosion Prevention Technology in the Completed well System for Sour Gas well

2013 ◽  
Vol 712-715 ◽  
pp. 1096-1099
Author(s):  
Ling Feng Li
Keyword(s):  
Steel Corrosion ◽  
Gas Production ◽  
Corrosion Prevention ◽  
Gas Reservoirs ◽  
Gas Field ◽  
Gas Well ◽  
Corrosion Resistant Alloy ◽  
System Life ◽  
Sour Gas

For natural gas well in sour gas reservoirs, very serious corrosion in the completed well system is an important factor of gas production system life. In order to ensure the long-term development of gas wells, this paper mainly introduces material corrosion prevention technology in the completed well system, such as corrosion-resistant alloy steel corrosion control technology, bimetallic combination tubing, corrosion inhibitor technology and so on. By taking LJ Gas Field as an example, this paper introduces the material corrosion prevention technology in the completed well system in LJ Gas Field. For application in the completed well system in LJ Gas Field, the technology above have good performance of corrosion resistance.

Study and Application for Corrosion-Resistant Material Selection of Tubing and Casing in Sour Gas Reservoirs under Coexistence of H2S and CO2

2012 ◽  
Vol 485 ◽  
pp. 429-432
Author(s):  
Ling Feng Li ◽  
Xiao Ming Liu ◽  
Zhi Qiang Huang
Keyword(s):  
Material Selection ◽  
Gas Production ◽  
Resistant Material ◽  
Gas Reservoirs ◽  
Gas Field ◽  
Gas Well ◽  
Corrosion Resistant ◽  
Puguang Gas Field ◽  
Sour Gas ◽  
Selection Of

For natural gas well with high content of CO2 and H2S, very serious corrosion in the gas well string is an important factor of gas production system life. In order to ensure the long-term development of gas wells, this paper mainly study the corrosion-resistant material selection of tubing and casing in sour gas reservoirs under coexistence of H2S and CO2 and proposes the optimization idea and technique of tubing and casing material selection. By taking Puguang gas field as an example, this paper optimizes the material selection of production casing for Puguang gas field. By testing, the optimal materials of gas well string in Puguang gas field have good performance of erosion resistance

scholarly journals Production optimization in well-6 of Habiganj gas field, Bangladesh: a prospective application of Nodal analysis approach

2020 ◽  
Vol 10 (8) ◽  
pp. 3557-3568
Author(s):  
Md. Shaheen Shah ◽  
Md Hafijur Rahaman Khan ◽  
Ananna Rahman ◽  
Stephen Butt
Keyword(s):  
Optimization Technique ◽  
Gas Production ◽  
Production Optimization ◽  
Vertical Wells ◽  
Gas Reservoirs ◽  
Gas Field ◽  
Nodal Analysis ◽  
Prospective Application ◽  
Overall Performance ◽  
Inflow Performance

Abstract The overall performance of gas reservoirs and the optimization of production, as well as its sensitivity analysis, are affected by several factors such as reservoir pressure, well configuration and surface facilities. The Habiganj well no. 06 (HBJ-06) is one of the significant gas-producing vertical wells of the Habiganj gas field, currently producing 14.963 MMscfd of natural gas from the upper gas sand. The widely used Nodal analysis is an optimization technique to improve the performance and was applied for the HBJ-06 to increase its production rate by optimizing manners. By this analysis, each component starting from the reservoir to the outlet pressure of the separator was identified as a resistance in the system by evaluating their inflow performance relationship and vertical lift performance. The F.A.S.T. VirtuWell™ software package was used to perform this analysis, where the declinations of wellhead pressures were suggested as 1300, 1200, 1100 and 1000 psi(a) without any modification of the tubing diameter and skin factor. Hence, the respective optimized rates of the daily gas production were increased to 38.481, 40.993, 43.153 and 46.016 MMscfd. At the same time, the optimized condensate gas ratio was calculated as 0.07, 0.06, 0.06 and 0.05, associated with the optimized condensate water ratio of 0.11, 0.10, 0.09 and 0.08, respectively.

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