Day 3 Thu, September 16, 2021最新文献

Drilling the Point Pleasant-Utica Shale Fractured Formation During the COVID-19 Pandemic Utilizing CBHP MPD with a PMCD Contingency 在COVID-19大流行期间，利用CBHP MPD和PMCD应急方案钻井Point Pleasant-Utica页岩裂缝地层

Day 3 Thu, September 16, 2021 Pub Date : 2021-09-14 DOI: 10.2118/208436-ms

Sagar Nauduri, A. Shimi, Gildas Guefack, M. Parker

{"title":"Drilling the Point Pleasant-Utica Shale Fractured Formation During the COVID-19 Pandemic Utilizing CBHP MPD with a PMCD Contingency","authors":"Sagar Nauduri, A. Shimi, Gildas Guefack, M. Parker","doi":"10.2118/208436-ms","DOIUrl":"https://doi.org/10.2118/208436-ms","url":null,"abstract":"\u0000 Drilling the Point Pleasant-Utica formation in the Appalachian Basin has posed challenges to most operators, especially in Western Pennsylvania. A recent well drilled in this region demonstrated that with proper buy-in from the Operator, Constant Bottomhole Pressure (CBHP) Managed Pressure Drilling (MPD) could be the answer when planned and executed correctly. This paper drives the point that MPD is more than simply dropping chokes on location.\u0000 Prior to drilling the well, the Operator initiated the communication very early with the MPD service provider and created an avenue to reduce the projected mud weight and develop a detailed CBHP MPD plan with a Pressurized Mudcap Drilling (PMCD) contingency. The anticipated challenges on this well were: High-pressure gas fractures, formation instability/shale breakout, severe/total loss of returns, inability to reach Target Depth, and casing/cementing issues.\u0000 The Operator took time and worked with the new MPD service provider to carefully design and plan a new well (referred to as ‘Y1’ in this document), which helped execute the MPD part of the project within 30 days. In contrast, the MPD execution on a previous well (referred to as ‘X2’ in this document) with the older MPD service provider took more than 90 days. MPD execution on the new MPD well included dynamic influx management and loss mitigation, and understanding of the petro-physical conditions to reach the target. The significant factors that helped drill this well safely with a low Non-Productive Time (NPT) are excellent safety culture, communication, high quality and well-maintained MPD equipment, and a very knowledgeable and highly experienced MPD team. This project was finished within half of the budgeted Authorization for Expenditure (AFE), setting milestones in this region for this Operator.","PeriodicalId":301091,"journal":{"name":"Day 3 Thu, September 16, 2021","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127832281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Challenges and Opportunities Related to Use of Models in Drilling Operations 钻井作业中使用模型的挑战与机遇

Day 3 Thu, September 16, 2021 Pub Date : 2021-09-14 DOI: 10.2118/206391-ms

M. V. Ottermo, K. Bjørkevoll, T. Onshus

{"title":"Challenges and Opportunities Related to Use of Models in Drilling Operations","authors":"M. V. Ottermo, K. Bjørkevoll, T. Onshus","doi":"10.2118/206391-ms","DOIUrl":"https://doi.org/10.2118/206391-ms","url":null,"abstract":"\u0000 Automation of managed pressure drilling (MPD) has a big potential for improving consistency, efficiency, and safety of operations, and is therefore pursued by many actors. While this development mitigates many risk elements, it also adds some related to for example mathematical algorithms and remote access. This work is based on document reviews, interviews, and working sessions with the industry, and adds insight on how risks associated with moving to higher levels of automation of MPD can be mitigated to a level where benefits are significantly larger than the sum of added risks.\u0000 The work has resulted in many recommendations for the industry, where most were related to testing, verification, and validation of the models and data inputs, as well as meaningful human control and employing a holistic approach when introducing new models. Recommendations were also given to the Petroleum Safety Authority Norway. These were related to missing or inadequate use of standards by the industry, lack of ICT knowledge, and encouraging increased experience sharing.\u0000 Future work should address how to enable meaningful human control as models become more complex or to a larger extent is based on empirical data and artificial intelligence as opposed to models based on first principles. Human control is important in unexpected situations in which the system fails to act safely. There is also a need to address ICT security issues arising when remote operation becomes more common.","PeriodicalId":301091,"journal":{"name":"Day 3 Thu, September 16, 2021","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114161482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Systematic Build-Up Pressure Analysis Advances Accurate Fingerprinting of Formation Breathing in Gas Wells 系统的堆积压力分析为气井地层呼吸提供了准确的指纹识别方法

Day 3 Thu, September 16, 2021 Pub Date : 2021-09-14 DOI: 10.2118/206397-ms

Maria Retuta, L. Medina

{"title":"Systematic Build-Up Pressure Analysis Advances Accurate Fingerprinting of Formation Breathing in Gas Wells","authors":"Maria Retuta, L. Medina","doi":"10.2118/206397-ms","DOIUrl":"https://doi.org/10.2118/206397-ms","url":null,"abstract":"\u0000 Differentiating wellbore breathing from real influxes in Alberta's Deep Basin has been problematic in the past as they both result in similar surface parameters. An incorrect interpretation of formation breathing may lead to significant non-productive time (NPT) as secondary well control operations from an influx can take days. On the contrary, a false negative will force drillers to perform secondary well control procedures that may lead to loss of circulation if excessive and unnecessary pressure is exerted on the formation.\u0000 MPD allows for a systematic approach to identify wellbore breathing more accurately in gas wells. The process involves a series of consecutive pressure build-up and flowback tests with close real-time monitoring to identify a breathing formation that is returning fluid to surface as microfractures close. This paper describes the protocol designed for distinguishing wellbore breathing and illustrates how several drilling parameter trends were interpreted to correctly identify wellbore breathing characteristics and differentiate them from a migrating gas influx. Testing the procedure on multiple wells resulted in 70% operational time savings from reduction in post mud rollover delays on breathing wellbores.\u0000 This paper shows that the methodology utilized provides consistent and effective results using the MPD techniques, eliminates the ambiguity of wellbore breathing versus actual influxes, and shows the potential application in more areas that are prone to this problem, reducing uncertainty, NPT, and total drilling time.","PeriodicalId":301091,"journal":{"name":"Day 3 Thu, September 16, 2021","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131910615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Real-Time Multi-Event Anomaly Detection using Elliptic Envelope and A Deep Neural Network for Enhanced MPD Robustness 基于椭圆包络和深度神经网络的实时多事件异常检测增强MPD鲁棒性

Day 3 Thu, September 16, 2021 Pub Date : 2021-09-14 DOI: 10.2118/206399-ms

Qifan Gu, Amirhossein Fallah, P. Ashok, Dongmei Chen, E. van Oort

{"title":"Real-Time Multi-Event Anomaly Detection using Elliptic Envelope and A Deep Neural Network for Enhanced MPD Robustness","authors":"Qifan Gu, Amirhossein Fallah, P. Ashok, Dongmei Chen, E. van Oort","doi":"10.2118/206399-ms","DOIUrl":"https://doi.org/10.2118/206399-ms","url":null,"abstract":"\u0000 In managed pressure drilling (MPD), robust and fast event detection is critical for timely event identification and diagnosis, as well as executing well control actions as quickly as possible. In current event detection systems (EDSs), signal noise and uncertainties often cause missed and false alarms, and automated diagnosis of the event type is usually restricted to certain event types.\u0000 A new EDS method is proposed in this paper to overcome these shortcomings. The new approach uses a multivariate online change point detection (OCPD) method based on elliptic envelope for event detection. The method is robust against signal noise and uncertainties, and is able to detect abnormal features within a minute or less, using only a few data points. A deep neural network (DNN) is utilized for estimating the occurrence probability of various drilling events, currently encompassing (but not limited to) six event types: liquid kick, gas kick, lost circulation, plugged choke, plugged bit, and drillstring washout. The OCPD and the DNN are integrated together and demonstrate better performance with respect to robustness and accuracy. The training and testing of the OCPD and the DNN were conducted on a large dataset representing various drilling events, which was generated using a field-validated two-phase hydraulics software.\u0000 Compared to current EDS methods, the new system shows the following advantages: (1) lower missed alarm rate; (2) lower false alarm rate; (3) earlier alarming; and (4) significantly improved classification capability that also allows for further extension to even more drilling events.","PeriodicalId":301091,"journal":{"name":"Day 3 Thu, September 16, 2021","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121772004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Analysis of Riser Gas Pressure from Full-Scale Gas-in-Riser Experiments with Instrumentation 全尺寸立管内气体压力仪器分析

Day 3 Thu, September 16, 2021 Pub Date : 2021-09-14 DOI: 10.2118/206389-ms

Mahendra R. Kunju, M. Almeida

引用次数: 2

Integrating an MPD System on a Jack-Up Rig; Why You Should and How You Can 自升式钻井平台MPD系统集成为什么你应该和如何做

Day 3 Thu, September 16, 2021 Pub Date : 2021-09-14 DOI: 10.2118/206395-ms

Jason Polkinghorne, Michael Cadd, R. Graham, Emil Stoian, Richard E. Sandell, Jason Nugent

引用次数: 0

Collaborative Engineering and Design Leads to Optimized MPD Land Rig Concept 协同工程设计优化MPD陆地钻机概念

Day 3 Thu, September 16, 2021 Pub Date : 2021-09-14 DOI: 10.2118/206393-ms

Svein Hovland, Ricardo Gonzalez, I. Knight, Harshad Patil, Greg Matherne

引用次数: 0