A New Comprehensive Model for Predicting the Pressure Drop of Flow in the Horizontal Wellbore

Abstract

Over the past two decades, the modeling of flow in a perforated pipe with influx through wall openings has been recognized as a key topic especially in the field of horizontal wells. In this paper, based on the theoretical analysis and previous research achieve ments, combining with the new measured data sets stemming from the large-scale experi mental apparatus designed and constructed recently at China University of Petroleum (CUP), a new comprehensive model has been developed for the prediction of pressure drop regarding single-phase flow in horizontal perforated pipes with wall influx, in which new correlations for calculating the hydraulic friction factor and momentum correction factor of variable mass flow are given. The presented model is then implemented using the visual basic.net package and validated against two data sets obtained on single-phase water flow and single-phase oil flow. Predictions of the new model and frequently used Ouyang model are also compared based on the new experimental data. Results show that the model given in this article can not only properly represent the complex mechanisms o f flow in the horizontal wellbore, such as the resistance caused by wall perforations and the drag reduction or so-called lubrication effect caused by wall injection, but also has a preferable prediction accuracy. Compared with the water flow data and the oil flow data, the absolute average percentage errors of the proposed model are, respectively, 4.5% and 5.0%, which demonstrates better performance and wider application range than Ouyang model.

Study on Skin Factor and Productivity of Horizontal Well after Acidizing with Nonuniform Damage

“…Wellbore. Because of the pressure drop in the wellbore [25][26][27][28][29][30], the flow rate is changeable at any location along the wellbore; meanwhile, the total rate in the wellbore is increasing gradually. When the HW is treated by acidizing, the production is greatly increased, so an assumption can be made that the condition of fluid in the wellbore is turbulent flow, for the barefoot well completion, the oil flow from the formation to the wellbore uniformly, as is shown in Figure 5.…”

Experimental investigation of hydrate formation, plugging and flow properties using a high-pressure viscometer with helical impeller

“…To develop an operating and design philosophy to transport and/or identify the flow ability of hydrate slurries, the impact of hydrates on properties of fluid flow must be understood. If rheological parameters of the flowing fluid are not properly determined, flow modeling and design become difficult (Simon 2004;Zhang et al 2014). Rheological characterization of hydrate slurries is critical to developing pipeline operating guidelines and developing rheological models (Eric et al 2013).…”

The Experimental and Model Study on Variable Mass Flow for Horizontal Wells With Perforated Completion

“…A considerable number of experimental work on pressure losses of single flow in perforated completed horizontal wells has been published by many scholars, such as Asheim [1] and Su [2][3] of NTNU, Japanese scholar Ihara [4][5][6] ,Yuan [7][8][9][10] of Tulsa, OuYang [11][12][13] of Stanford, Zhou Shengtian [14][15] of CUP(East China),Wang Zhiming [16][17] of CUP(Beijing), Abdulwahid,M.A. [18] of Andhra University(India), Quan Zhang [19] of CUP (Beijing), Weipeng Jiang [20] of Tulsa. There are three shortages of the previous work.…”