Case Study: Numerical Simulation of a Tight Gas Reservoir with Multifractured Horizontal Wells

2012 ◽  
Author(s):  
Yang Feng ◽  
Ning Zhengfu ◽  
Liao Xinwei ◽  
Liu Huiqing ◽  
Liao Hongmei
Keyword(s):  
Numerical Simulation ◽  
Horizontal Wells ◽  
Tight Gas ◽  
Gas Reservoir ◽  
Tight Gas Reservoir

Influence of Rock Properties and Geomechanics on Hydraulic Fracturing: A Case Study from the Amin Deep Tight Gas Reservoir, Sultanate of Oman.

2012 ◽  
Author(s):  
Satya V. Perumalla ◽  
Antonio Santagati ◽  
Michael Tony Addis ◽  
Sultan Hamed Al-Mahruqy ◽  
Joe Curtino ◽  
...  
Keyword(s):  
Hydraulic Fracturing ◽  
Rock Properties ◽  
Tight Gas ◽  
Sultanate Of Oman ◽  
Gas Reservoir ◽  
Tight Gas Reservoir

Innovative Mini-DST and Production Evaluation Approach at Challenging HPHT Condition for KeShen Tight Gas Reservoir, a Case Study at Tarim Basin

2019 ◽  
Author(s):  
Shichen Shuai ◽  
Xinlei Zhang ◽  
Tengfei Ma ◽  
Yuanliang Zhao ◽  
Qingbin Guo ◽  
...  
Keyword(s):  
Tarim Basin ◽  
Tight Gas ◽  
Gas Reservoir ◽  
Evaluation Approach ◽  
Tight Gas Reservoir

Innovative Mini-DST and Production Evaluation Approach at Challenging HPHT Condition for KeShen Tight Gas Reservoir, a Case Study at Tarim Basin

2019 ◽  
Author(s):  
Shichen Shuai ◽  
Xinlei Zhang ◽  
Tengfei Ma ◽  
Yuanliang Zhao ◽  
Qingbin Guo ◽  
...  
Keyword(s):  
Tarim Basin ◽  
Tight Gas ◽  
Gas Reservoir ◽  
Evaluation Approach ◽  
Tight Gas Reservoir

Multistage Fracturing Optimization for the Successful Development of a Complex Tight-Gas Reservoir in Western India: Case Study

2016 ◽  
Author(s):  
Sherif Abdelaziz ◽  
Aman Singh ◽  
Mayur Deshpande ◽  
Shobhit Tiwari ◽  
Rajat Goyal ◽  
...  
Keyword(s):  
Western India ◽  
Tight Gas ◽  
Gas Reservoir ◽  
Successful Development ◽  
Tight Gas Reservoir

Introducing new method to improve log derived saturation estimation in tight shaly sandstones—A case study from Mesaverde tight gas reservoir

2012 ◽  
Vol 92-93 ◽  
pp. 132-142 ◽  
Author(s):  
Morteza Amiri ◽  
Mat H. Yunan ◽  
Gholamreza Zahedi ◽  
Mohd Z. Jaafar ◽  
Enoch O. Oyinloye
Keyword(s):  
New Method ◽  
Tight Gas ◽  
Gas Reservoir ◽  
Tight Gas Reservoir

Barik Reservoir Description- An Evolving Concept

2015 ◽  
Author(s):  
Khalil Al Rashdi ◽  
David Spain
Keyword(s):  
Tight Gas ◽  
Gas Reservoir ◽  
Field Development ◽  
Central Processing ◽  
Current State ◽  
Tight Gas Reservoir ◽  
Reservoir Description ◽  
The Cost ◽  
Oil Company

Abstract Khazzan field, situated in Block 61 in northern Oman, contains hydrocarbons at several deep levels, including the Barik, Miqrat, Amin and Buah formations. The Barik and Amin reservoirs are being developed in the southern portion of the block to produce 1 bcf/d of gas by end 2017. The development, jointly owned by Oman Oil Company (40%) and BP (60% and operator), will cost over 16 billion US$ and will include a central processing facility and surface facilities for about 300 wells. Most of the wells will be 1000m long horizontal wells, completed using multiple hydraulic fracturing techniques. The two other reservoirs, Miqrat and Buah, contain high H2S levels; these will not be developed at this phase due to high subsurface uncertainties and the cost to process the sour development. This paper presents a case study of an evolving reservoir description of a large, tight gas reservoir, the Barik Formation. It is rare to embark on a major “greenfield” reservoir development of a tight gas reservoir with limited static and almost no dynamic data. The reservoir description is essential to the successful evaluation and management of the inherent subsurface uncertainty at this stage in the field development. Building an associated appraisal plan and being flexible to new understanding is required to make the development a success. The reservoir description is guiding the ongoing appraisal activities in an attempt to reduce the risk and increase the overall project value. This paper presents the evolution of the reservoir description over the last 6 years of BP activity in Block 61 in the Sultanate of Oman. It reviews three stages of reservoir description: Pre-Appraisal, Mid-Appraisal, and Development. The pre-appraisal description was built using the pre-bid data package and published literature to support the commercial access decisions. The Mid Appraisal description provided a health-check for development readiness and appraisal plan revision. Finally, the Development description is presented in a 3D geo-cellular model which is based on the summary of the appraisal activities and supporting field development learnings. The paper discusses these descriptions and the benefits of the changing description, explanation of the advantages of front end loading at the early appraisal stage and how this has led us to our current state

Successful Unlock for Non-Continuous Sand of Tight Gas Reservoir using Horizontal Wells

2021 ◽  
Author(s):  
Raed Mohamed Elmohammady ◽  
Mostafa Mahrous Ali ◽  
Hassan Elsayed Salem
Keyword(s):  
Horizontal Well ◽  
Horizontal Wells ◽  
Western Desert ◽  
Tight Gas ◽  
Vertical Wells ◽  
Gas Reservoir ◽  
Horizontal Section ◽  
Reservoir Permeability ◽  
Wide Range ◽  
Tight Gas Reservoir

Abstract Reservoir development in Safa Formation requires a lot of vertical wells in order to exploit the gas reserve in the formation which means high cost is needed because the heterogeneity in the formation is noticed due to sandstone is pinched out in different locations of the reservoir. So, vertical well may be sweep from limited area of the reservoir that make safa formation has less priority for new activities. Form all of that the plan was drilling horizontal wells with long horizontal section to recover great volume of gas from reservoir. In addition to reduction in number of drilling vertical wells in the reservoir. In contrast, the major constrains is the small thickness of reservoir that make drilling horizontal section is very difficult. The main characteristics of safa formation is non continuous sandstone in the whole reservoir with great heterogeneity that not controlled by any points in the reservoir for the distribution of sandstone. In addition, there are a lot of locations in safa formation that include lean intervals which have kaolinite, elite that are not capable for produce from sand. In other hand, there is another constrains beside the discontinuity of sand production is the heterogeneity of permeability properties of reservoir that change in wide range across the reservoir with minimum range of 0.01 md and increase in some locations to reach 100 md. From all of the previous, it is a big challenge in drilling horizontal wells with long horizontal section in thin reservoir thickness in order to access the best reservoir permeability and optimize the number of drilling wells based on this concept. This paper will discuss case study of unlock and development long horizontal section in gas reservoir characterized by its tightness. The main goal of this horizontal well to recover ultimate gas reserve from safa formation by horizontal section reached to 2000 meter with a challenge because it is abnormal to drill this large horizontal section in western desert of Egypt in reservoir thickness range from 5 meter to 30 meter as prognosis from other offset wells in case of there is no pitchout of the sandstone. After Drilling of first horizontal well, the results were unexpected because the well penetrates a large horizontal section of sandstone in safa formation. This section reached to around 1750 meter with average reservoir permeability between 10 – 20 md and the reservoir porosity about 13% with good hydrocarbon saturation that changes along this section from 75% to 80%. So, this well put on production with very stable gas production rate 20 MMSCFD. In this paper will discuss in details the different challenge that faced to unlock this tight gas reservoir and will discuss the performance of horizontal well production. In this paper will discuss the first horizontal well in safa formation and the longest horizontal section in western desert of Egypt in tight gas formation that has a lot of challenges and risks are faced. After success the concept of horizontal well in heterogeneous reservoir, the next plan is the development of this reservoir using several horizontal wells to recover the ultimate recovery of gas from safa formation.

Tiltmeter Hydraulic Fracturing Mapping on a Cluster of Horizontal Wells in a Tight Gas Reservoir

2015 ◽  
Author(s):  
Jian Zhou ◽  
Yijin Zeng ◽  
Tingxue Jiang ◽  
Baoping Zhang ◽  
Xudong Zhang
Keyword(s):  
Hydraulic Fracturing ◽  
Horizontal Wells ◽  
Tight Gas ◽  
Gas Reservoir ◽  
Tight Gas Reservoir
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