Maximizing Co-Activity Operation and Mastering Drilling Practice as Effective Strategies for Marginal Field Development

2021 ◽  
Author(s):  
Praja Hadistira ◽  
Bintang Kusuma Yuda ◽  
Setiohadi Setiohadi ◽  
Muhammad Alfianoor Yudhatama ◽  
Ryan Aditia Wijaya ◽  
...  
Keyword(s):  
Development Project ◽  
Time Saving ◽  
Field Development ◽  
Effective Strategies ◽  
Well Completion ◽  
Deep Well ◽  
Drilling Parameters ◽  
Safety Incident ◽  
Mature Field ◽  
Marginal Field

Abstract A limited remaining reserve is one of the challenges commonly found in mature field development. Swamp fields in the Mahakam block is an example of mature field development which leads to a marginal operation. Delivering wells more economically is one of the key points to survive during those conditions. Rig operation with a significant daily expenditure could be a way for improvement to yield economic wells. In general, an efficient rig operation would deliver wells in a shorter duration and at a lower cost. In order to lessen the well duration, two aspects could be improved: performing co-activity operation to shorten the horizontal time (preparation) and mastering drilling practices to shorten the vertical time (drilling). In the co-activity operations aspect, various initiatives have been implemented, such as rigless operations, batch drilling, and offline or simultaneous activities. While in the drilling practices aspect, drilling parameters, bit design, connection practice, and team motivation were the areas that have been improved. This paper will elaborate further on those initiatives. Implementing massive co-activity operations and the best drilling practices have demonstrated a significant time saving of 24% for the shallow well (final depth around 1800 m) and 27% for the deep well (final depth around 4300 m) in the block. These practices have also made a new record of the fastest well completion in 2.17 days and the highest drilling ROP for 141 m/hour with drilling 2303 m in the first 24 hours. The record of most drilled length in 24 hours is the world best performance of RSS BHA as per Directional Driller Company worldwide record. As a result, the 2020 average cost of the shallow well was 2.6 MUSD while the deep well was 4.1 MUSD. Those massive co-activity operations and drilling practices have been properly executed since 2019 without any safety incident and related NPT. The positive results have helped the development project to survive in marginal conditions.

World's First Extension Pack with 7-in. Enhanced Single-Trip Multizone System: Success Case and Learning Points on the Installation and Treatment Design

2021 ◽  
Author(s):  
Sunanda Magna Bela ◽  
Abdil Adzeem B Ahmad Mahdzan ◽  
Noor Hidayah A Rashid ◽  
Zairi A Kadir ◽  
Azfar Israa Abu Bakar ◽  
...  
Keyword(s):  
Reservoir Characterization ◽  
Development Planning ◽  
Development Project ◽  
Lessons Learned ◽  
High Rate ◽  
Individual Treatment ◽  
Flow Area ◽  
Field Development ◽  
Well Completion ◽  
Gravel Pack

Abstract Gravel packing in a multilayer reservoir during an infill development project requires treating each zone individually, one after the other, based on reservoir characterization. This paper discusses the installation of an enhanced 7-in. multizone system to achieve both technical and operational efficiency, and the lessons learned that enabled placement of an optimized high-rate water pack (HRWP) in the two lower zones and an extension pack in the uppermost zone. This new approach helps make multizone cased-hole gravel-pack (CHGP) completions a more technically viable and cost-effective solution. Conventional CHGPs are limited to either stack-pack completions, which can incur high cost because of the considerable rig time required for multizone operations, or alternate-path single-trip multizone completions that treat all the target zones simultaneously, with one pumping operation. However, this method does not allow for individual treatment to suit reservoir characterization. The enhanced 7-in. multizone system can significantly reduce well completion costs and pinpoint the gravel placement technique for each zone, without pump-rate limitations caused by excessive friction in the long interval system, and without any fiuid-loss issues after installation because of the modular sliding side-door (SSD) screen design feature. A sump packer run on wireline acts as a bottom isolation packer and as a depth reference for subsequent tubing-conveyed perforating (TCP) and wellbore cleanup (WBCU) operations. All three zones were covered by 12-gauge wire-wrapped modular screens furnished with blank pipe, packer extension, and straddled by two multizone isolation packers between the zones, with a retrievable sealbore gravel-pack packer at the top. The entire assembly was run in a single trip, therefore rig time optimization was achieved. The two lower zones were treated with HRWPs, while the top zone was treated with an extension pack. During circulation testing on the lowermost zone, high pumping pressure was recorded, and after thorough observation of both pumping parameters and tool configuration, it was determined that the reduced inner diameter (ID) in the shifter might have been a causal factor, thereby restricting the flow area. This was later addressed with the implementation of a perforated pup joint placed above the MKP shifting tool. The well was completed within the planned budget and time and successfully put on sand-free production, exceeding the field development planning (FDP) target. The enhanced 7-in. multizone system enabled the project team to beat the previous worldwide track record, which was an HRWP treatment only. As a result of proper fluid selection and rigorous laboratory testing, linear gel was used to transport 3 ppa of slurry at 10 bbl/min, resulting in a world-first extension pack with a 317-lbm/ft packing factor.

Single-Trip Completion as a Catalyst for Brownfield Rejuvenation: A Case Study from Offshore Peninsular Malaysia

2021 ◽  
Author(s):  
Ainul Azuan Masngot ◽  
Izzuddin Jamaludin ◽  
Nurul Iffah M. Garib ◽  
Tengku Zuhaili Tengku Yahya ◽  
Hasyimah Ghazali ◽  
...  
Keyword(s):  
Shallow Water ◽  
Radio Frequency Identification ◽  
Cost Savings ◽  
Development Project ◽  
Peninsular Malaysia ◽  
Field Development ◽  
Well Completion ◽  
Crude Oil Prices ◽  
Sand Control ◽  
Operational Time

Abstract Field development for brownfields nearing their economic thresholds is always challenging, especially in offshore environments. As an operator, innovative approaches are necessary to reduce capital expenditures (CAPEX) and create attractive projects. A marginal cluster consisting of three fields, namely PN, NL, and PR, is expected to reach its economic limit in the next 2 years. This paper elaborates on single-trip completion technology as a catalyst for drilling one infill well in the PR field development project. In 2017, one appraisal well was drilled in a western area of PR field to validate the presence of oil. The scope of work included evaluating reservoir productivity and acquiring bottomhole fluid samples. A drillstem test with four multirate tests was executed for this reservoir. A horizontal development well named PA-02 was proposed and categorized as an extended-reach drilling well because of the drilling complexity. Most offshore wells in shallow-water environments are completed with a conventional well completion run that takes two or more trips, which normally takes more than between 5 and 8 days. Given expensive daily rig rates, the ability to reduce completion installation time was deemed vital to the economics of the project. If the installation incurs additional unnecessary project costs, it can cause the project to be economically unattractive. Using a collaborative approach, an interventionless, single-trip sand control system was designed and selected as the optimal completion solution to meet project demands. Radio-frequency identification (RFID) technology is one of the key enablers for the single-trip completion as it offers the utmost flexibility in both activation and contingency methods to deliver the necessary project cost reduction. At a time of uncertain global crude oil prices, the RFID-enabled single-trip completion concept discussed in this paper has become a beacon of light for operators in an otherwise dark period by allowing previously marginal or sub-economic projects to become viable. This technology has resulted in operational time savings of at least 27% compared to typical conventional two-trip completions in Malaysia offshore environments. Minimizing operational risk is also foreseen by reducing installation to a single integrated upper and lower completion trip. Selecting this RFID-enabled completion facilitated full deployment in one trip in the high-angle well, which eliminated the deployment of a tractor service for a 67% cost savings in this aspect alone. This method represented a paradigm shift in operational efficiency and will now be the operator’s strategic completion methodology when developing marginal fields. The deployment represents the first application of a single-trip completion in an economically challenging brownfield in the Malaysian offshore environment. The reduction in operational time and resultant savings in CAPEX proves that a single-trip completion offers an exceptional alternative to conventional methods in the shallow-water offshore environment.

scholarly journals A Hybrid Artificial Intelligence Model to Predict the Elastic Behavior of Sandstone Rocks

2019 ◽  
Vol 11 (19) ◽  
pp. 5283 ◽  
Author(s):  
Gowida ◽  
Moussa ◽  
Elkatatny ◽  
Ali
Keyword(s):  
Poisson’S Ratio ◽  
Accurate Determination ◽  
Oil And Gas Industry ◽  
Poisson's Ratio ◽  
Elastic Behavior ◽  
Percentage Error ◽  
Ann Model ◽  
Field Development ◽  
Well Completion

Rock mechanical properties play a key role in the optimization process of engineering practices in the oil and gas industry so that better field development decisions can be made. Estimation of these properties is central in well placement, drilling programs, and well completion design. The elastic behavior of rocks can be studied by determining two main parameters: Young’s modulus and Poisson’s ratio. Accurate determination of the Poisson’s ratio helps to estimate the in-situ horizontal stresses and in turn, avoid many critical problems which interrupt drilling operations, such as pipe sticking and wellbore instability issues. Accurate Poisson’s ratio values can be experimentally determined using retrieved core samples under simulated in-situ downhole conditions. However, this technique is time-consuming and economically ineffective, requiring the development of a more effective technique. This study has developed a new generalized model to estimate static Poisson’s ratio values of sandstone rocks using a supervised artificial neural network (ANN). The developed ANN model uses well log data such as bulk density and sonic log as the input parameters to target static Poisson’s ratio values as outputs. Subsequently, the developed ANN model was transformed into a more practical and easier to use white-box mode using an ANN-based empirical equation. Core data (692 data points) and their corresponding petrophysical data were used to train and test the ANN model. The self-adaptive differential evolution (SADE) algorithm was used to fine-tune the parameters of the ANN model to obtain the most accurate results in terms of the highest correlation coefficient (R) and the lowest mean absolute percentage error (MAPE). The results obtained from the optimized ANN model show an excellent agreement with the laboratory measured static Poisson’s ratio, confirming the high accuracy of the developed model. A comparison of the developed ANN-based empirical correlation with the previously developed approaches demonstrates the superiority of the developed correlation in predicting static Poisson’s ratio values with the highest R and the lowest MAPE. The developed correlation performs in a manner far superior to other approaches when validated against unseen field data. The developed ANN-based mathematical model can be used as a robust tool to estimate static Poisson’s ratio without the need to run the ANN model.

M-9 Zawtika Marginal Field Development Study

2017 ◽  
Author(s):  
L. Chaowarit ◽  
H. Pongpat ◽  
P. Korakote ◽  
O. Pariyachat ◽  
H. Pithak ◽  
...  
Keyword(s):  
Development Study ◽  
Field Development ◽  
Marginal Field

Study on the Characteristics of Well Completion Technology in Deepwater Oil and Gas Field Development

2021 ◽  
Vol 3 (8) ◽  
pp. 70-72
Author(s):  
Jianbo Hu ◽  
◽  
Yifeng Di ◽  
Qisheng Tang ◽  
Ren Wen ◽  
...  
Keyword(s):  
Deep Water ◽  
Deep Sea ◽  
Oil And Gas ◽  
Gas Field ◽  
Marine Research ◽  
Field Development ◽  
Research Technology ◽  
Well Completion ◽  
Development Capacity ◽  
Exploration And Development

In recent years, China has made certain achievements in shallow sea petroleum geological exploration and development, but the exploration of deep water areas is still in the initial stage, and the water depth in the South China Sea is generally 500 to 2000 meters, which is a deep water operation area. Although China has made some progress in the field of deep-water development of petroleum technology research, but compared with the international advanced countries in marine science and technology, there is a large gap, in the international competition is at a disadvantage, marine research technology and equipment is relatively backward, deep-sea resources exploration and development capacity is insufficient, high-end technology to foreign dependence. In order to better develop China's deep-sea oil and gas resources, it is necessary to strengthen the development of drilling and completion technology in the oil industry drilling engineering. This paper briefly describes the research overview, technical difficulties, design principles and main contents of the completion technology in deepwater drilling and completion engineering. It is expected to have some significance for the development of deepwater oil and gas fields in China.

Transition to New Reserves Reporting System in Kazakhstan: Challenges and Benefits

2021 ◽  
Author(s):  
Adil Mukanov ◽  
Asset Zhumadil
Keyword(s):  
Reporting System ◽  
Current System ◽  
State Committee ◽  
Development Project ◽  
Point Of View ◽  
International Standards ◽  
Field Development ◽  
The Republic ◽  
Scr System ◽  
New System

Abstract The 74th step of "100 Concrete Step of Nation Plan" initiated by the first president of the Republic of Kazakhstan (RoK) Nursultan Nazarbayev states that Kazakhstani reserves reporting system must be changed to the international standards. One of them actively proposed is the SPE-PRMS. Therefore, the main goal of the paper is to show challenges of the transition, discuss possible problems, their solution and, eventually, advantages for the companies. In the paper the main aspects of the current State Committee of Reserves (SCR) system or well-known as GKZ system inherited from the Soviet system and used in Kazakhstan are reported. Especially, we try to highlight the reserves categories of A, B, C1 and C2 and their impact on further field development in details. Also SPE-PRMS and SEC rules are shown in terms of differences and similarities with the current system. Importantly, authors demonstrate how the SPE-PRMS standards are wide-spread around the globe. Finally, details of planned shift, some recommendations and simplification of reporting process are exhibited. As the result of the study the following points are investigated. Firstly, what will be with reports just recently approved by the SCR. Especially, for the big fields whose preparation takes up to several years. Secondly, what the frequency is for the reporting. Thirdly, whether the reports will be handled through several approval stages or just submitted. Moreover, how close to SPE-PRMS the new system should be adopted taking into account Kazahstani realities and if the reports should be composed in English along with Russian, since the main purpose of the transition is to be clear and transparent for the foreign investors. Otherwise, unfamiliar language and big deviation from the well-known standards may ruin the efforts. Despite the complexity of these issues the benefits of the new system are obvious and there are several reasons. The main advantage is that the SPE-PRMS is all about economically recoverable reserves without any ties with fixed recovery factor. In addition, report is done in short time and less volume. Finally, if the norm of the report's submission without going to tedious approval process is accepted, that will ease work of the subsoil users’ because it accelerates further preparation of field development project. The study is done due to recent changes of the RoK subsoil usage regulations, where the requirement for reserves reporting system's transition to the new international standards is mentioned. However, the issue is not much highlighted in technical publications from the operating companies’ point of view. Thus, having experience with GKZ, SPE-PRMS and SEC systems the authors take this opportunity to show challenges and benefits of the decision.

Planning and Technology Utilization: A Holistic Approach to Marginal Field Development

2016 ◽  
Author(s):  
M Wilkins ◽  
S Pambayuning ◽  
R Watcharanantakul ◽  
S Thepparak ◽  
S Opdal ◽  
...  
Keyword(s):  
Holistic Approach ◽  
Technology Utilization ◽  
Field Development ◽  
Marginal Field
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