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  Mechanical Specific Energy (MSE) is now a well-known concept to quantify the cutting efficiency of the rock. Thanks to its simplicity, its utilization has significantly increased over the last few years with electronic drilling recorders, especially in unconventional wells to optimize the drilling process and eventually reduce cost. A typical use is to compare the MSE to the rock strength to see whether the right amount of energy is utilized at the bit and not wasted or dispersed somewhere else. However, MSE alone cannot tell if drilling inefficiency is due to a change in the rock hardness, or due to vibrations, or bit wear or bit balling. This paper presents a new methodology that enables to fill the gap, in combining the MSE to the drilling strength (DS) to detect dysfunctions, such as vibrations or bit wear. As MSE is mainly affected by the level of downhole torque (TOB) , the effect of WOB is often neglected and is not taken into account in standard MSE analysis . In re-in...

In unconventional resources, horizontal wells are drilled in parallel at a spacing distance designed to maximize drainage of the reservoir. Lateral well spacing should be such that the drainage radiuses meet, but do not overlap. If drainage envelopes do not meet, then oil and gas are left stranded in the reservoir. However, due to the limited accuracy of downhole surveying methods, positional errors in wellbore placement often lead to deviations by hundreds of feet from the optimal wellbore position . The purpose of this study is to quantify the impact of such wellbore placement errors on reservoir recovery for different surveying methods. A recovery simulator web application was developed to approximate the effect of wellbore positional error on reservoir drainage. The application requires input parameters to define the drilling scenario being evaluated. These include lateral wellbore length, lateral well spacing and recovery percentage as a function of the drainage radius. A user s...

𝗦𝘂𝗿𝘃𝗲𝘆 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 𝗳𝗿𝗼𝗺 𝗛𝗲𝗹𝗺𝗲𝗿𝗶𝗰𝗵 & 𝗣𝗮𝘆𝗻𝗲 𝗶𝘀 𝘂𝗻𝗶𝗾𝘂𝗲𝗹𝘆 𝗲𝗾𝘂𝗶𝗽𝗽𝗲𝗱 𝘁𝗼 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂 𝗶𝗺𝗽𝗿𝗼𝘃𝗲 𝘆𝗼𝘂𝗿 𝘄𝗲𝗹𝗹 𝗮𝗰𝗰𝘂𝗿𝗮𝗰𝘆. Using the most advanced technology and expert human support-- H&P Survey Management delivers advanced, real-time MWD survey corrections to enable precise well spacing, enhanced placement within formations, and better knowledge of offset wellbore locations. 😲 It doesn't matter if you are even using an H&P FlexRig® Fleet rig. Survey Management is rig agnostic and our team can support your drilling worldwide. 👀 Learn more: https://www.helmerichpayne.com/techno ... 📖📚 Dive into our 100+ year history here: https://bit.ly/hpabout REVOLUTIONARY RIG DESIGN. 💪 Read about our award-winning FlexRig® Fleet designed for optimal flexibility, performance and efficiency: https://bit.ly/flexrig-fleet . 🎥 Watch our Flex 3 in action: https://bit.ly/flex3-move WANT MORE AUTOMATION? ⏳🔃 Our advance...

Since 1920, H&P has been the industry’s most trusted partner in drilling productivity and reliability. We continue that legacy with a strategy focused on long-term profitable growth and high-quality, innovative products and services. H&P’s integrity promise permeates its interactions with shareholders, business partners, employees and the communities in which we operate across the globe. H&P offers a full suite of integrated technologies designed to address a variety of oilfield challenges that ultimately deliver a better drilling outcome . From advanced engineering software to autonomous directional drilling and wellbore placement, H&P is equipped to not only deliver industry-leading rigs , but field-proven oil and gas technologies to optimize drilling performance . 📖📚 Dive into our 100+ year history here: https://bit.ly/hpabout REVOLUTIONARY RIG DESIGN. 💪 Read about our award-winning FlexRig® Fleet designed for optimal flexibility, performance and efficiency: ht...

Optimal wellbore placement and collision avoidance requires accurate real-time steering of directional wells. Uncertainties in the wellbore position are accounted for by industry standard error models. However, these error models are only valid if the directional surveys are quality controlled and gross error is prevented by appropriate procedures. Particularly effective quality control is achieved by independent validation. A novel real-time web application was developed for the transfer of directional survey data between the rig site and a remote operations center. Surveying professionals at the rig site upload or import survey data into the web application in real-time. The survey measurements are then automatically validated through independent quality checks to identify gross error. Remote survey analysts can access the pre-qualified survey data and evaluate it for systematic or random error that would indicate non-compliance with the instrument performance model. Surveys can...

Recent well positioning uncertainties evaluation per SPE published ISCWSA model for MWD survey tools suggests that 80% of the inclination measurement error budget is a consequence of BHA sag. BHA sag is the misalignment of the directional sensor with the borehole direction due to deflection of the MWD drill collar under gravity and borehole curvature. The magnitude of the error depends on BHA type and geometry, sensor spacing , hole size and several other factors. This paper presents a new methodology based on modern 3D BHA/Hole interacting modeling for BHA sag corrections and residual error evaluation at each MWD survey stations. 11 different typical 17½" and 12¼" rotary and steerable motor BHA’s with variable gauge stabilizers were computed in multiple configurations ( borehole geometry , BHA settings, friction...) following a Monte Carlo process which involved more then a million simulations. Results of this study show that the residual BHA sag uncertainty as proposed by...

Want to learn more about the H&P approach to HSE? https://www.helmerichpayne.com/our-ap ... @HelmerichPayneInc is the leading on-shore drilling company for oil and natural gas companies. With offices all over the world-- we are uniquely positioned to serve our clients who need high efficient drilling solutions with a focus on sustainability and safety. 🤔 Curious how Helmerich & Payne could help you achieve better drilling outcomes? 𝗘𝘅𝗽𝗹𝗼𝗿𝗲 𝗺𝗼𝗿𝗲 𝗵𝗲𝗿𝗲: https://www.helmerichpayne.com/our-ap ... 📖 Read more about our 100+ year history here: https://www.helmerichpayne.com/about Check out other H&P Drilling technologies here:    • H&P Technologies   🏆 🏆 See why we have won the 𝗘𝗻𝗲𝗿𝗴𝘆𝗣𝗼𝗶𝗻𝘁𝗲 𝗥𝗲𝘀𝗲𝗮𝗿𝗰𝗵 𝗖𝘂𝘀𝘁𝗼𝗺𝗲𝗿 𝗦𝗮𝘁𝗶𝘀𝗳𝗮𝗰𝘁𝗶𝗼𝗻 𝗔𝘄𝗮𝗿𝗱 for the past 15 years straight: https://www.helmerichpayne.com/our-ap ... @energypointresearch5171 award winners listed here: https://www.energypointr...

Micro doglegs are a natural effect of any vertical or directional well that can explain a wide variety of down hole problems, from additional torque and drag to an inability to run completions. These doglegs are inherent to the rock drilling process and can generate borehole spiraling in vertical sections or sliderotary pattern when using steerable mud motor in horizontal sections. Standard surveying every 95ft or so cannot detect these micro doglegs and only gives a partial look at the actual well path. This paper presents the results of a case study showing how accurate downhole measurements combined with advanced drill string modeling can detect borehole tortuosity and better quantify the down hole drilling efficiency. A trajectory prediction model able to calculate the inclination and azimuth each foot or so has been developed to estimate micro doglegs using standard surveys, bottom hole assembly (BHA) data and steering parameters. In the demonstrated case, a slick motor assem...

Casing wear predictions are necessary for a fit-for-purpose, cost efficient casing design . In order to achieve a reliable casing wear prediction from simulations, three objectives have to be met: (1) Accurate modelling of mechanical work, (2) accurate derivation of casing wear from mechanical work and (3) accurate wear factor calibration through MFCL (Multi Finger Caliper Log) interpretation. The paper presents a theoretical description of all three steps and their application on a representative field case, highlighting recent improvements and reducing uncertainties at each step with a focus on a newly developed MFCL interpretation methodology . To accurately derive the mechanical work an advanced stiff-string model (3) is used to simulate the history of side forces foreach rotating operation, of each BHA, which was in contact with the casing. Accurate surveys and small calculation increments are vital. Operation parameters must be data mined with great care. To properly calibrate ...

Senior H&P leaders Micah Backlund and Megan Oberly join the @OfficialOGGN podcast to discuss the Actively C.A.R.E. (Control and Remove Exposures) program used to help reduce SIF exposure and increase the safety performance of the drilling industry as a whole. Safety performance for the drilling industry is typically measured based on OSHA's TRIR standards. While H&P still records and tracks these -- we push ourselves to a higher standard and use a prevention-based method of focusing on serious injury and fatality (SIF) potentials. Our program, called Actively C.A.R.E (Control And Remove Exposures) is implemented at every level of the organization. The goal is for everyone to be able to go home at the end of work the same way they showed up. 🕮 Read more about the HSE Approach at Helmerich & Payne: https://www.helmerichpayne.com/our-ap ... ⛑️ Safety Training at H&P: https://www.helmerichpayne.com/media/ ... 📈 HSE Fact Sheet: https://www.helmerichpayne.com/media/ ...

Stick-slip is still present in most of the wells drilled today, especially in unconventional wells . Friction is an inevitable and important force along the long lateral section, but it contributes to many types of dysfunctions that lead to drilling inefficiency. Stick-slip is caused mainly by rotational friction induced along the drillstring, from the drill bit cutting the rock formation to the bottom hole assembly and drill pipe that contact the well bore. In the past, much attention has been given the cutting action of polycrystalline diamond compact (PDC) bits to explain and mitigate stickslip, without much emphasis on the frictional torque . However, it is important to understand that the torque generated on the remaining drillstring accounts for most of the total torque at surface. This paper presents a case study on an unconventional well where stick-slip modeling was used to explain and understand stick-slip vibrations with or without the presence of active control systems a...

Aluminum drill pipe has already been proven as a viable alternative to steel drill pipe when drilling long horizontal wells thanks to its lighter weight that does not compromise resistance to yield and buckling. At the same time, the development of unconventional wells has seen the deployment of numerous technologies to further improve the performance and increase the lateral section to reduce costs. An operator has recently and successfully tested a new aluminum drill pipe with an axial oscillation tool to push further the limits of the drilling system . This paper presents the key findings of the case study using a mixed aluminum-steel string combined with an axial oscillation tool. First, the innovative drill pipe design is presented, followed by lessons learned during rig operations regarding pipe handling practices, rig compatibility and pipe inspection. Then, results of the drilling simulations performed during the well planning phase are presented. This modeling led to an ...

With the current market’s high prices for drilling units and sophisticated directional and formation assessment services, low systems reliability or poor directional performance in the execution of complex wells (ERD, HPHT, Deep Water applications) can spell costly Non Productive Time (NPT) for operators. Over the past two decades, many Bottom Hole Assembly (BHA) models have been developed to address the directional performance issue, but their application in an operational environment has generally failed for lack of strong associated BHA analysis methodologies . This paper presents a unique automated methodology for Post Analysis of BHA directional behavior. It is based on modern 3D analytical models , combining BHA, BIT and formation effects with highly flexible data management. Implemented in user-friendly BHA management software , it can be used to define a BHA run segmentation and to determine the influence of the BHA settings in particular geological formation blocks. The Post...

During drilling operations, the bit-rock and drillstring-wellbore contacts with stick-slip phenomena, fluid structure interaction, and mass unbalances distributed along the drillstring yield nonlinear dynamics coupling axial, torsional, and lateral vibrations. Excessive and uncontrolled vibrations may induce drilling equipment damage due to fatigue, cracking, and ruptures. Understanding and predicting the drilling dynamics become necessary to avoid those harmful vibrations. The drillstring dynamics is modelled in the time domain using the beam finite element method. The contact between the drillsting and borehole is accounted for using radial elastic stops and the fluid effect on the drillstring dynamics is considered by two models. The initial position is obtained from a static equilibrium computation that takes into account the drillstring pre-load. The dynamics is then calculated by applying a time-integration scheme . The dynamic model is applied to a real case of a quasi-verti...

This paper presents the simulation of a dynamic downhole drilling phenomenon which resulted in significant non-productive time and unnecessary drilling cost. The consistency of simulation fidelity from one stand to another provides insights as to the application of simulation for the purposes of optimizing drilling technique and recognizing drilling dysfunction. The significance of physical and virtual data characteristics and uncertainties for the purpose of drilling optimization and automation is illustrated. The dynamic range of drilling forces estimated by typical quasi-static models is often underestimated. Physical sensors also typically cannot be located where drill string failures actually occur. Timebased simulation techniques enable more realistic estimations of dynamic forces and motions at critical drill string locations and their cumulative contributions to drill string fatigue. Simulation has the potential to prevent vibration-related drilling tool failures, invisible ...

During drilling operations, high drillstring vibrations may originate from various sources, namely, the bit-rock interaction, drillstring-wellbore contacts, stick-slip phenomena, fluid-structure interaction , and mass unbalances. Excessive vibrations may induce drilling equipment failures (fatigue, cracking, washouts, and ruptures), which can be costly and catastrophic. Therefore, it is crucial to accurately model the drillstring dynamics in order to help drilling engineers make better decisions and avoid harmful vibrational effects. This paper proposes a numerical model developed in the time domain to estimate the drillstring lateral, axial, and torsional dynamics. It is based on the finite element method coupled with the Craig-Bampton reduction method (Craig and Bampton 1968) to reduce computation time. The drillstring-wellbore contact forces are automatically determined and may occur on both tool-joints and drill pipe bodies, and the drilling fluid is accounted for by its inertia...

Our industry has undergone a notable shift towards embracing, implementing and investing in sustainable efforts amid global concerns about climate change and environmental impact. Many major oil companies are investing in renewable energy sources as we look to diversify and make strides in energy inclusivity. Long-term and short-term strategies amongst operators and service companies alike are consistently communicated and we continue to see strides in new technologies that support all our efforts. We as an industry want to do better, and every day, we are. As the rigs of the past are transformed into the rigs of the future, strategic decisions must be made using existing assets that do not require complete refurbishment. As relative carbon impact is analyzed in an energy landscape, with the need to uphold strict capital investment standards, solutions are developed for today’s drilling rigs that can make significant strides without being overly complex. An Eco-Friendly Future As the...