Troubleshooting Cable Deployed Thru Tubing Electrical Submersible Pumps: A Case Study from South East Asia

2021 ◽  
Author(s):  
Saurabh Anand ◽  
Eadie Azahar B Rosland ◽  
Elsayed Ouda Ghonim ◽  
Latief Riyanto ◽  
Khairul Azhar B Abu Bakar ◽  
...  
Keyword(s):  
Low Cost ◽  
Power Cable ◽  
Related Data ◽  
Root Cause ◽  
Artificial Lift ◽  
Electrical Submersible Pumps ◽  
Cause Of Failure ◽  
Water Cut ◽  
Discharge Pressure

Abstract PETRONAS had embarked on an ambitious thru tubing ESP journey in 2016 and had installed global first truly rig less offshore Thru Tubing ESP (TTESP) in 2017. To replicate the success of the first installation, TTESP's were installed in Field – T. However, all these three TTESP's failed to produce fluids to surface. This paper provides the complete details of the troubleshooting exercise that was done to find the cause of failure in these wells. The 3 TTESP's in Field – T were installed as per procedure and was ready to be commissioned. However, during the commissioning, it was noticed that the discharge pressure of the ESP did not build-up and the TTESP's tripped due to high temperature after 15 – 30 mins of operation. Hence none of the 3 TTESP's could be successfully commissioned. Considering the strategic importance of TTESP's in PETRONAS's artificial lift plans, detailed troubleshooting exercise was done to find the root cause of failure to produce in these three wells. This troubleshooting exercise included diesel bull heading which gave some key pump performance related data. The three TTESP's installed in Field – T were of size 2.72" and had the potential to produce an average 1500 BLPD at 80% water cut. The TTESP deployment was fully rigless and was installed using 0.8" ESP power cable. The ESP and the cable was hung-off from the surface using a hanger – spool system. The entire system is complex, and the installation procedure needs to be proper to ensure a successful installation. The vast amount of data gathered during the commissioning and troubleshooting exercise was used for determining the failure reason and included preparation of static and dynamic well ESP model. After detailed technical investigative work, the team believes to have found the root cause of the issue which explains the data obtained during commission and troubleshooting phase. The detailed troubleshooting workflow and actual data obtained will be presented in this paper. A comprehensive list of lessons learnt will also be presented which includes very important aspects that needs to be considered during the design and installation of TTESP. The remedial plan is finalized and will be executed during next available weather window. The key benefit of a TTESP installation is its low cost which is 20% – 30% of a rig-based ESP workover in offshore. Hence it is expected that TTESP installations will pick-up globally and it's important for any operator to fully understand the TTESP systems and the potential pain points. PETRONAS has been a pioneer in TTESP field, and this paper will provide details on the learning curve during the TTESP journey.

Case Study—Failure Analysis of a Multiplexer

2016 ◽  
Author(s):  
Michael Woo ◽  
Marcos Campos ◽  
Luigi Aranda
Keyword(s):  
Failure Analysis ◽  
High Reliability ◽  
Component Failure ◽  
Root Cause ◽  
Knowing That ◽  
Cause Of Failure ◽  
The Cost

Abstract A component failure has the potential to significantly impact the cost, manufacturing schedule, and/or the perceived reliability of a system, especially if the root cause of the failure is not known. A failure analysis is often key to mitigating the effects of a componentlevel failure to a customer or a system; minimizing schedule slips, minimizing related accrued costs to the customer, and allowing for the completion of the system with confidence that the reliability of the product had not been compromised. This case study will show how a detailed and systemic failure analysis was able to determine the exact cause of failure of a multiplexer in a high-reliability system, which allowed the manufacturer to confidently proceed with production knowing that the failure was not a systemic issue, but rather that it was a random “one time” event.

Magnetic Current Imaging with Magnetic Tunnel Junction Sensors—Case Study and Analysis

2006 ◽  
Author(s):  
Benaiah D. Schrag ◽  
Matthew J. Carter ◽  
Xiaoyong Liu ◽  
Jan S. Hoftun ◽  
Gang Xiao
Keyword(s):  
Tunnel Junction ◽  
Quantum Interference ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junction ◽  
Magnetic Current ◽  
Root Cause ◽  
Cause Of Failure ◽  
Gmr Sensors ◽  
Sensor Probe

Abstract We describe the use of magnetic tunnel junction (MTJ) sensors for the purposes of magnetic current imaging. First, a case study shows how magnetic and current density images generated using an MTJ sensor probe were used to isolate the root cause of failure in a newly-designed ASIC. We then give a brief introduction to the operation and construction of MTJ sensors. Finally, a full comparison is made between the three types of sensors which have been used for magnetic current imaging: giant magnetoresistive (GMR) sensors, superconducting quantum interference devices (SQUIDs), and magnetic tunnel junctions. These three technologies are quantitatively compared on the basis of spatial resolution, sensitivity, and geometry.

Forty-Seven–Well Case Study: How a Holistic ESP Design for Deep Deviated Wells with Low Flow Rates Achieved Economic Production

2021 ◽  
Author(s):  
Lawrence Camilleri ◽  
Jorge Luis Villalobos ◽  
Pedro Luis Escalona ◽  
Alvaro Correal ◽  
Carlos Reyes ◽  
...  
Keyword(s):  
Historical Review ◽  
Substantial Improvement ◽  
Operating Conditions ◽  
Gas Content ◽  
Low Flow ◽  
Flow Rates ◽  
Artificial Lift ◽  
Electrical Submersible Pumps ◽  
Deviated Wells

Abstract The Shaya wells have vertical depths of 11,000 ft and are heavily depleted. They, therefore, require 10,000 ft of lift to achieve the target drawdown. Electrical submersible pumps (ESPs) were deployed, but because of the low flow rates (80 B/D), produced solids, and high free gas content, initial run lives were uneconomical. This 47-well case study demonstrates how a holistic design and operating procedure achieved both the target drawdown and an economical mean time between failure (MTBF). "Learning from history" was the key method as there was sufficient ESP data to determine the root cause of ESP failures based on a combination of dismantle inspection and failure analysis (DIFA) and operating conditions. Moreover, production testing combined with real-time downhole gauge data enabled inflow characterization with both nodal and pressure transient analysis, thereby establishing the well potential and ensuring that the new proposed design was not only reliable but also achieved the targeted drawdown. An additional requirement was to handle both the current low rates and higher rates associated with future waterflooding. A historical review of 9 wells was conducted, followed by a new ESP design that was proposed and installed in 47 wells, which achieved an MTBF of over 940 days, whereas previous designs in the same wells had an MTBF of only 650 days. This substantial improvement was achieved without compromising drawdown as the wells were produced with a flowing intake pressure of approximately 250 psia at setting depths of 9,500 ft. This result is particularly noteworthy when one considers the harshness of the well conditions and, in particular, bottom-hole temperatures of 240°F, fines migration, deviated wells with doglegs above 2.5°/100ft, intake pressures below bubble point and low productivity indices (PIs) of 0.2 B/D/psi. The high depletion combined with low PIs, which resulted in very low flow rates of as low as 50 B/D, was the most challenging factor of this application. Outflow modeling and wellbore hydraulics were also important considerations to limit solid fallback due to insufficient velocity in the production tubing as well minimize heat rise caused by startup transients, which can be long in low-PI wells. ESPs are traditionally best suited to wells with liquid rates providing sufficient cooling for both the motor and the pump as well as short unloading transients during startup. This success story, therefore, provides an important reference for future ESP applications in very low flow rates in deep wells, which are beyond the recommended application envelope of alternative low flow rate artificial lift solutions such as progressive cavity pumps and sucker rod pumps.

An Integrated Methodology to Maximize Production Through a Holistic Structured Framework Construction for ESP Outages

2021 ◽  
Author(s):  
Ahmed Khalaf ◽  
Saud Alquwizani ◽  
Cleavant Flippin ◽  
Abdulmalek Almatrodi
Keyword(s):  
Performance Indicators ◽  
Service Providers ◽  
Oil Field ◽  
Related Data ◽  
Root Cause ◽  
Integrated Methodology ◽  
Electrical Submersible Pumps ◽  
Restoration Time ◽  
The Impact ◽  
Related Process

Abstract Many considerations are taken into account to ensure production targets are met for fields lifted by Electrical Submersible Pumps (ESP). ESP outages are indeed one of the major operational disturbances that significantly impact production strategies. Hence, a holistic structured framework for ESP outages has to be constructed to prevent or curtail ESP outages by capturing each of the planned and unplanned shutdowns effortlessly, comprehensively and effectively. It should, in fact, consider all parameters and relevant data that aid to better understand such outages; this would include root cause analysis, affected systems, and the production impact. It should also capture all required statistics while generating needed illustrative visuals for advanced analytics to identify the overall impact of ESP outages in a particular oil field. The outcome of the framework should be presented in the form of Key Performance Indicators (KPIs) to assess the ESP performance. Using the ESP outages framework will ensure capturing all related data and result in fruitful output using advanced statistical tools. This will clearly highlight both deficiencies and improvements for each area related to the operator companies or the service providers. Then, efforts will be made to assign timely corrective actions for fields that lag in performance while exerting efforts to improve underperforming service providers. This framework introduces a continuous tracking mechanism of ESP performance associated to outages through comprehensive KPIs. It has the ability to highlight the bad actors within the operator companies or the service providers and logical recommendations to address them. As a result, the number of outages (trips) and restoration time will be minimized which will lead to reducing the impact of revenue loss caused by the ESP production disruptions. In this structure, novel KPIs specifically focusing on ESP outages will be described in detail. Also, an integrated prototype of the ESP outages framework will be presented to demonstarte its effectiveness without further complicating other related process workflows.

Case Study of a DDR Loopback Test Failure Encountered on a Map Ball Grid Array Packaged Device

2017 ◽  
Author(s):  
Jose Z. Garcia ◽  
Kris Dickson
Keyword(s):  
Failure Analysis ◽  
Ball Grid Array ◽  
Analysis Techniques ◽  
Root Cause ◽  
Test Methodology ◽  
Cause Of Failure ◽  
Test Failure

Abstract This paper describes how a DDR loopback test failure was analyzed successfully after being repackaged from an MBGA into a TBGA package substrate. DDR loopback test methodology is discussed as well as the advanced failure analysis techniques that were used to identify the root cause of failure.

scholarly journals Gas Lift Performance of Some Horizontal Wells in Ahdeb Oil Field

2021 ◽  
Vol 7 (3) ◽  
pp. 66-74
Author(s):  
Dr. Kareem A. Alwan ◽  
Dr. Maha R. Abdulameer ◽  
Mohammed Falih
Keyword(s):  
Water Injection ◽  
Injection Pressure ◽  
Oil Field ◽  
Reservoir Pressure ◽  
Injection Wells ◽  
Artificial Lift ◽  
Electrical Submersible Pumps ◽  
Optimal Injection ◽  
Water Cut ◽  
The Impact

Ahdeb is one of the Iraqi oil fields, its crude characterized by medium API (22.5-28.9) and highly reservoir pressure depletion from Khasib formation due to lack of water drive. This makes it difficult to produce economic oil rates. Therefore, many water injection wells were drilled by the operators to maintain the reservoir pressure during production. In addition to that, electrical submersible pumps (ESP) were used in some productive wells. This study suggests exploitation of gas associated with oil production to be recycled to lift oil as a substitute for the ESP .The work in this study includes using PIPSIM software to build a model of four studied productive wells (AD1-11-2H, AD2-15-2H, AD4-13-3H, A4-19-1H) after choosing the suited correlation for each well. According to the statistical results, Mukherjee & Brill correlation is the best option for all wells. The use of PIPESIM software include determining artificial lift performance to determine the optimum amount of gas injected, optimum injection pressure as well as the optimum injection depth and knowing the impact of these factors on production, as well as the determination of the optimal injection conditions when water cut changes. According to the current circumstances of the wells, the depth optimized for injection is the maximum allowable depth of injection which is deeper than the packer by 100 ft and the amount of injection gas is (1.5, 1, 1, and 1) MMscf/day for wells (AD2-11-2H, AD2-15-2H, AD4-13-3H, and AD4-19-2H) sequentially and injection pressure (2050, 2050, 2050, and 2000) psi for wells (AD2-11-2H, AD2-15-2H, AD4-13-3H, and AD4-19-2H) sequentially.  

Case Study of ESD-induced Pin Leakage Failure Solved Using Novel Powered TIVA Technique

2018 ◽  
Author(s):  
Sneta Mishra ◽  
Daniel R. Bockelman
Keyword(s):  
Root Cause ◽  
Leakage Failure

Abstract A case study is presented of a core CPU product where FA/FI debug is performed for an ESD-related pin leakage issue on an IO family to root cause and qualify the product. A Powered TIVA technique is used to localize the damage to the termination resistor circuitry of the affected IO block when the pin is tristated using a device tester. Failure characterization shows a gate to drain short on the transistor, with nanoprobing confirming a solid short on gate to drain and TEM finding a short at the location indicated by the TIVA hits.

Low Temperature Fault Isolation Using Soft Defect Localization

2012 ◽  
Author(s):  
Kristopher D. Staller
Keyword(s):  
Low Temperatures ◽  
Laser Scanning ◽  
Low Cost ◽  
Fault Isolation ◽  
Laser Scanning Microscopy ◽  
Cold Temperature ◽  
Multiple Point ◽  
Defect Localization ◽  
Low Levels

Abstract Cold temperature failures are often difficult to resolve, especially those at extreme low levels (< -40°C). Momentary application of chill spray can confirm the failure mode, but is impractical during photoemission microscopy (PEM), laser scanning microscopy (LSM), and multiple point microprobing. This paper will examine relatively low-cost cold temperature systems that can hold samples at steady state extreme low temperatures and describe a case study where a cold temperature stage was combined with LSM soft defect localization (SDL) to rapidly identify the cause of a complex cold temperature failure mechanism.

Sign in / Sign up

Export Citation Format

Share Document