Xi'an Well-sun Electronic Technology PLC products

Data Acquisition System

Well-sun - Portable Data Acquisition System

The Portable Data Acquisition System (DAS) 1U from Well-sun is a highly integrated unit designed for seamless data acquisition in various field operations. It combines multiple functionalities within a compact 1U 19-inch unit, rendering DC Power capability and serving as an interface between downhole tools and surface systems via a USB connection. Engineered to be versatile, the DAS 1U can deliver power to downhole tools, gather and process data, and facilitate depth and tension measurements. Supporting the WSCbus protocol, it is compatible with AMI, Manchester, and Positive/Negative pulse codes, enhancing its adaptability to diverse operational requirements. The device features robust USB ports for interfacing, and its internal DC unit ensures efficient energy delivery. A visual display optimizes cable connectivity, while the system's compatibility with various cable types ensures flexible deployment. Operating over a wide input voltage range (100-240V), this portable DAS 1U stands out for its integration, adaptability, and functionality in demanding environments.

Well-Sun - Portable Data Acquisition System for Cased-Hole Well Logging

The Portable Data Acquisition System (DAS) 4U by Well-Sun is an integrated system designed for cased-hole well logging applications. Utilizing a mono-conductor cable, it excels in the collection and processing of logging data, which it can display in graph or curve formats. This system facilitates online interpretation of various logged products. It features a two-way transmission function and uses USB for enhanced transmission rates. The modular design divides each functional module for better expandability, and a customized bus board with added buffer and network resistance ensures higher reliability. The system is driven by Digital Signal Processing (DSP) and Complex Programmable Logic Device (CPLD) technologies. It supports multiple logging tools and is compatible with DDL III WSCbus and the 3504 protocol. Additionally, it outputs data in multiple formats, including LAS, DLIS, and WS.

Production Logging Tools

Well-Sun - Wireline Telemetry Cartridge for Surface System and Downhole Communication

The Wireline Telemetry Cartridge from Well-Sun serves as an intelligent interface between surface systems and downhole tools in logging operations. It integrates cable bus and tool bus interfaces, a master controller, and a step-down DC-DC power supply. The data acquisition system (DAS) retrieves data through the tool bus, packages it, and sends it to the surface panel via the cable bus interface. Additionally, the DAS can send data to the telemetry cartridge, allowing for control and configuration of the cartridge and logging tools, which facilitates full-duplex communication. Technical specifications include a maximum operating temperature of 175°C, pressure endurance up to 100MPa, and an adjustable transmission rate ranging from 50 kbps to 200 kbps. The system also features automatic identification of logging tools and can convert high voltage from the cable bus to a lower voltage for the tool bus using a DC-DC module. Power specifications include a maximum of 200VDC and 2200mA. This tool is primarily used to acquire tool data, control tools, and ensure reliable communication between the surface system and downhole instruments.

Well-Sun - Quartz Pressure

The Quartz Pressure / CCL (QPC) is engineered to measure the column gradient pressure of fluid within the casing, supplying crucial data for fluid characterization. The device enables the extraction of differential pressure curves, which are vital for comprehensive pressure analysis. This technology offers critical parameters necessary for the evaluation of production fluid behavior. Additionally, the CCL component facilitates meticulous well depth correction through changes in magnetic flux at the casing collar, rendering precise depth measurement. It supports high-speed telemetry systems and is combinable with high-speed WTC for enhanced performance. The QPC provides high accuracy and resolution, making it suitable for depth control in casing and tubing, identification of severe casing or tubing damage, and detailed down-hole pressure gradient measurement.

Cement Bond Logging Tools

Well-Sun - Segmented Cement Bonding Tool for Precise Cement Bond Logging

The Segmented Cement Bonding Tool (SBT) is an advanced cement bond logging tool designed for precise measurement and evaluation of cement bond quality. The tool segments the casing, cement annulus, and formation into six areas for detailed analysis. It features sensors that are pressed against the well wall, ensuring high measurement accuracy, unaffected by external factors like casing fouling, micro annulus, formation speed, or changes in mud properties. The SBT generates a comprehensive cement image, depicting grooves and voids with precision. The tool also includes a Variable Density Log (VDL) at the bottom of the tool string that captures the full wave train, analyzing the bond between the formation and cement annulus. Incorporating a Casing Collar Locator (CCL) and Gamma Ray Tool (GRT), it provides accurate depth information for the acoustic signals. The SBT is specifically used to measure cement bond quality at both the first and second interfaces – between casing and cement annulus, and between cement annulus and formation. Additionally, it facilitates gamma ray measurements for precise depth correction.