Unconventional shale play selective fracturing using multilateral s technology. Some later studies1014 concentrated on the transient rate responses as well as transient pressure behavior of multilateral wells. The ability to create wells with multiple branches that can target widely spaced reservoir compartments provides engineers unlimited options in optimizing economic extraction of. Modelling inflow performance of multilateral wells by. Themig this article begins on the next page f the petroleum society paper 9665 multilateral drilling and completions applications in practice d. We also analyze the performance in case of anisotropic reservoirs. Multilateral well completion systems for shale schlumberger. Multilateral wellsthose with multiple legs that branch off from a single wellcan produce oil efficiently because the legs can tap multiple productive zones and navigate around impermeable ones. Unfortunately, drilling engineers must often mechanically stabilize multilateral wells with a liner or casing, which can cost millions of dollars.
Pdf modeling of inflow well performance of multilateral wells. Laterals are completed openhole or with uncemented or cemented. Study on multilateral well productivity prediction technology. The postcold war moment witnessed a tremendous flourishing in multilateral cooperation.
Arab bank for economic development in africa badea 67. The single wellbore requires fewer production well slots hence reduces cost of rig time, tools, services and equipment together with increased and accelerated reserves. They are timedependent and vary linearly with the well discharge. Drilling several horizontal sections from a single vertical wellbore has improved the drilling and production economics on many wells. Also, economic analysis developed model for a multilateral well is presented in this paper.
Therefore, it is significant to investigate effects of hydraulic fracture geometries on the multilateralwell egs performance. In this research the role and performance of 2 kinds of multilateral wells are. A slant well would be one that intersects the reservoir at an angle see figure 1. It was a ninebranch well with barefoot laterals drilled by alexander grigoryan, a russian drilling engineer. An improved semianalytical approach for predicting horizontal and multilateral well performance chapter pdf available june 2019 with 39 reads how we measure reads. These methods are used to show how productivity depends on wellbore geometry and reservoir properties. Multilateral well completion systems for shale plays enable confident, reliable well reentry and expansion while minimizing surface costs. Final workshop report prepared for the minerals management service under the mmsotrc cooperative research agreement 14350199ca31003 task order 85221 mms project number 439. Hill is an expert in the areas of production engineering, well completions, well stimulation, production logging, and complex well performance horizontal and multilateral wells and has presented lectures and courses and consulted on these topics throughout. Multilateral development banking for this centurys development challenges five recommendations to shareholders of the old and new multilateral development banks montek singh ahluwalia, lawrence summers, and andres velasco, chairs nancy birdsall and scott morris, project directors c m y cm my cy cmy k mdbcoverforprint3. This document contains a list of signatories and parties the multilateral conventto ion to implement tax treaty related measures to prevent base erosion and profit shifting. The first known multilateral well was drilled in bashkiria, russia, in 1953. Completion design optimization of multilateral well to. This allows for alternative well construction strategies for vertical, inclined, horizontal, and extendedreach wells.
Pete 636 horizontal, multilateral and intelligent wells. A schematic of a vertical well, b schematic of a slant well with angle. Pdf assessment and evaluation of degree of multilateral wells. The study, demonstrated that the heat extraction performance of multilateral well egs was equal to or even better than that of the conventional double well egs. Themig dresser oil tools this paper is to be presented at the 47th annual technical meeting of the petroleum society in calgary, alberta, canada, june 10. It is important to understand, that taml codes refer to junction, but not to whole well design. The ability to create wells with multiple branches that can target widely spaced reservoir compartments provides engineers unlimited options in optimizing. Pdf the use of multilateral well is becoming an emerging method to improve oil recovery efficiently and to drain reservoirs more efficacious. Multilaterals can be constructed in both new and existing oil and gas wells. Aquifer losses are the head losses that occur in the aquifer where the flow is laminar. This study presents a new semianalytical model for predicting horizontal and multilateral well performance, which includes friction, acceleration and accumulation induced pressure drop along. Multilateral wells have emerged as a new means, alternative to vertical and horizontal wells for optimal reservoir exploitation. Jpt a methodology for multilateralwell optimization. One important factor is that, in addition to new wells, multilaterals may be drilled from existing wells and can benefit existing reservoirs.
Whether its a conventional well or the most complex subsea multilateral, we make it our business to understand your completion challenge. Ding zhu multiple transverse fracturing along a horizontal well is a relatively new technology that. Multilateral, intelligent well completion benefits explored. Modeling of inflow well performance of multilateral wells. Successful multilateral and horizontal wells require new considerations, interdisciplinary planning, and special techniques. Assessment and evaluation of degree of multilateral wells.
Rapid multilateral systems enable you to confidently reenter existing wells to add laterals that increase reserves while minimizing investment. Multilateral horizontal well productivity onepetro. Study on multilateral well productivity prediction. Accurate well test data must be obtained and the proper ipr applied for successful analysis. Hill is associate department head and holder of the robert l. Assessment and evaluation of degree of multilateral wells performance for determination of their role in oil recovery at a fractured reservoir in iran. This intense course focuses on the critical need for a proper understanding of all aspects of horizontal and multilateral design and completion. Numerical study on effects of hydraulic fracture geometries. Therefore, it is significant to investigate effects of hydraulic fracture geometries on the multilateral well egs performance. The well reportedly produced 17 times more oil than offset wells in the field at 1. Save time on your completion by enabling fracturing in both the lateral bore and main bore in a single trip. The study, demonstrated that the heat extraction performance of multilateralwell egs was equal to or even better than that of the conventional doublewell egs. Multilateralwell technology figure2 is revolutionizing the way that reservoirs are accessed by wells. Intelligent multilateral well completions provide downhole flow rate, pressure, and temperature measurements at multiple well segments, which allows for a continuous spatiotemporal data stream.
Sep 11, 2012 the single wellbore requires fewer production well slots hence reduces cost of rig time, tools, services and equipment together with increased and accelerated reserves. Sensitivity analysis for possible tubing, casing, coiled tubing, velocity string, perforations and gaslift completion options. The multilateral study coordinated by the german institute for international educational research, on which the report is based, was a collaborative effort between educational scientists from seven countries. Aid recipient satisfaction by type of donor % 11 table 3. Potential reservoir applications of multilateral wells me identified. The closed form model applies for relatively low vertical permeability formations for the singlephase system and two. Pdf an improved semianalytical approach for predicting. Methods to predict well performance and recovery from horizontal and multilateral wells are presented with integration of inflow and wellbore flow performance for individual and multilateral wells. Methods for calculating their productivity and performance are described. Request pdf numerical study on heat extraction performance of a multilateral well enhanced geothermal system considering complex hydraulic and natural fractures the complex fracture network is.
Create interactive schematics for simple or complex well geometries including deviated or multilateral wellbores, multilayered reservoirs and crossflow. Potential reservoir applications of multilateral wells are identified. Pdf spe 35711 multilateral well performance prediction. The normal objective of both horizontal and multilateral wells is to produce more oil or gas from a well and to reduce the overall cost of producing each barrel of oil or each. The main objective of this project is to develop a swift novel. Paper spe 163959 presented at the spe middle east unconventional gas s conference and exhibition. Design, model and optimize complex well completions. Numerical investigation on heat extraction performance of a.
Such an extensive data input poses a challenging task to decide on the optimal strategy of manipulating the inflow control valve icv settings over. As with any completion, design must address reservoir type, drive mechanism, fluid properties, well configuration and any other complications that might exist, such as sand influx and water and gas coning. The technology can increase oildrainage area, improve oil well production, and. However, multilateralism can only operate in the geopolitical context within which it exists. In 1997, technology advancement for multilaterals taml, an industry consortium of operators and service companies, was formed to categorize multilateral wells by their complexity and functionality.
Case studies on the evaluation of multilateral well performance have also been presented by madden and vo6, karakas et al. The numerical simulation results show that the multilateral wells usually help improve the. In critical operations, you can rely on experienced teams and proven technology. Multilateral well technology figure2 is revolutionizing the way that reservoirs are accessed by wells. However, hydraulic fracturing plays an extremely important role in improving the heat extraction performance of multilateralwell egs. Employing the concept of well interference and the joshis expression. Horizontal, extended reach, and multilateral drilling. Consequently, the generated correlations along with the concept of equivalent length have been used in this work to present a general method for predicting a multilateral well performance. Numerical investigation on heat extraction performance of. This allows for alternative wellconstruction strategies for vertical, inclined, horizontal, and extendedreach wells. A multilateral well is a well that has more than one branch radiating from the main. As well as the achievement of agenda 2030, this list includes the.
The models can be divided into two main categories. Perform well performance analysis and optimization ihs. Well completion options and its impact on well performance for horizontal and multilateral wells are summarized. A multilateral well multilateral wells have multiple completion options. Directional drilling technology is being pushed further with increasingly complex well paths, distant targets, and more difficult drilling environments. Our multilateral products can be used to rotate down the liner or screens while landing the junction for a simple and reliable solution for difficult.
The inflow performance models of horizontal, undulating, and multilateral wells are developed in this study. Multilateral development banking for this centurys. Kpi key performance indicator lic lowincome country lmic lowermiddleincome country. For example, you can drill an additional lateral to increase reservoir exposure or branch more than one lateral to increase reservoir exposure and target complex reservoirs. Pdf modeling of inflow well performance of multilateral. We offer systems that meet all taml level standards. Strategic choices for donors 3 list of tables, figures and boxes tables table 1. A well performance test is conducted to determine these losses. Hill is an expert in the areas of production engineering, well completions, well stimulation, production logging, and complex well performance horizontal and multilateral wells and has presented lectures and courses and. Potential multilateral well applications the first stage in predicting the performance of multilateral wells is identifying the types of reservoir application for which they may be used.
A wellperformance test is conducted to determine these losses. Modeling performance of horizontal wells with multiple fractures in tight gas reservoirs. A basic requirement for well analysis is the ability to define the entire inflow performance relationship ipr of the well. The main objective of this project is to develop a swift novel approach to predict and assess inflow performance of multilateral wells. Numerical study on heat extraction performance of a. Multilateral well is a well completed in two or more zones, also has a great potential to optimize oil well production. In general, a study found that multilateral wells perform better than single horizontal. Multilateral well definition and meaning collins english.
Failure of a multilateral well comsol multiphysics. Production performance starts with an exceptional completion from the reservoir to the production facility. Models for other well components can be used in addition to complete the predicted well performance. The rate of development of multilateral wells in the petroleum industry has been increased in the recent decades. However, hydraulic fracturing plays an extremely important role in improving the heat extraction performance of multilateral well egs. However, in our previous model 1, 30, the effects of rock deformation and dnf on egs performance were not considered, which has been proven to be very important by previous studies. Multilateral completion systems allow the drilling and completion of multiple lateral boreholes within a single mainbore. Assessment and evaluation of degree of multilateral wella. Summary evaluation of claims concerning relative benefits of bilateral and multilateral channels 16 table 4.