87 results about "Well integrity" patented technology

The invention discloses a method for automatically acquiring multi-source heterogeneous data knowledge, and aims to provide a method which has better integrity, universality and convenience and is beneficial to knowledge transmission. The method of the invention is realized through the following technical scheme: the method comprises the following steps: 1, processing; a concept-entity-attribute-relation-label is defined from top to bottom or from bottom to top, a knowledge model of an entity object is obtained, then data is obtained through direct data storage and crawler software, OCR and other recognition software, knowledge data is obtained, and conversion from a heterogeneous data source to a heterogeneous knowledge source is completed; obtaining entity-attribute-relationship triad instantiation under a known knowledge mode through a structured knowledge generation method; and updating knowledge and knowledge models by using a long-short-term memory network model (LSTM model) anda publisher-accomplisher cooperation mode to obtain a workflow for expanding and supplementing new knowledge, and obtaining a data flow accommodating concept, entity, relationship and attribute valueinstantiation triples by using the knowledge model formed by knowledge modeling.

The invention provides a cross steel plate water-stopping joint of a continuous concrete wall and a joint construction method thereof. The cross steel plate joint comprises a longitudinal water-stopping steel plate and a horizontal head steel plate, wherein the longitudinal water-stopping steel plate is about 35-50 cm long, a detouring flow line of cement slurry is lengthened, the impermeability of the joint of the continuous concrete wall is enhanced, the bottom of the horizontal head steel plate extends to the tank bottom level or is inserted into the soil by 20 cm, and the detouring flow line of concrete and sand pulp along the bottom of the head steel plate is blocked; during constructing, a cross steel plate and a steel reinforcement cage are welded into a whole which is then deposited into a tank section so that the joint and a wall body have better integrity; a counterforce box is deposited at the back of the cross steel plate and is impacted to enter soil by over + / -30 cm, and then carpolite or clay are backfilled at the back for sealing; the concrete is cast in the tank section; the counterforce box is pulled out, then a flushing or shoveling tool corresponding to the cross steel plate in structure is adopted to remove the attachment at the part so as to ensure the water-stopping effect and the joint intensity of the cross steel plate.

The invention relates to the use of distributed optical fibre sensors for distributed acoustic sensing, and in particular, modal analysis of distributed acoustic data obtained in-well to monitoring well integrity. By determining one or more acoustic modes corresponding to distributed speed of sound measurements within the wellbore, and analysing variations in the distributed speed of sound measurement it is possible to derive information relating to a formation and / or fluid in the wellbore.

A well integrity inspection system configured to inspect a well structure including multiple concentric layers. The well integrity inspection system includes an inspection probe positioned in the well structure. The inspection probe includes a plurality of excitation assemblies for transmitting a plurality of radiation emissions into the well structure. The plurality of excitation assemblies includes at least a neutron excitation assembly and an X-ray excitation assembly. The inspection probe also includes a plurality of detection assemblies configured to receive a plurality of backscatter radiation returns from the well structure. The plurality of detection assemblies includes at least a neutron detection assembly and an X-ray detection assembly. The well integrity inspection system further including a processor operatively coupled to the inspection probe. The processor is configured to determine a well integrity parameter of the well structure based on at least one of the plurality of backscatter radiation returns.

The invention discloses a process for making a water channel of an outlet water unit. The process is characterized in that an air tap is arranged at a position of an injection mold opposite to a water inlet or a water outlet of a cavity of the outlet water unit; a material-overflowing well is arranged at the water inlet or the water outlet opposite to the outlet water unit; plastic materials are injected to the cavity until the cavity is filled to reach the material-overflowing well; when the part of the plastic materials in the cavity adjacent to the cavity wall is hardened, high pressure nitrogen gas or high pressure fluid is injected from the air tap to extrude an abnormal water channel inside the plastic materials communicated with the water inlet and the water outlet of the outlet water unit body; the part of the plastic material extruded by the high pressure nitrogen gas or the high pressure fluid flows into the material-overflowing well; and the outlet water unit with the abnormal water channel is obtained by cooling. Therefore, the formation of the abnormal water channel inside a plastic product can be realized, the forming method of the water channel inside a conventional plastic product is changed, and the injection-molded product has better integrity, thus the pressure resistance and the service life of the product are ensured.

The invention relates to the use of distributed optical fiber sensors for distributed acoustic sensing, and in particular, modal analysis of distributed acoustic data obtained in-well to monitoring well integrity. By determining one or more acoustic modes corresponding to distributed speed of sound measurements within the wellbore, and analyzing variations in the distributed speed of sound measurement it is possible to derive information relating to a formation and / or fluid in the wellbore.

A loudspeaker driver has a diaphragm connected to a surrounding frame by a roll suspension which extends around the diaphragm and within the frame. The roll suspension connects the outer edge of the diaphragm to the inner edge of the frame and flexes as the diaphragm is displaced to and fro axially relative to the frame. In order to provide for better integrity of the roll suspension during its displacement, and reduce unwanted deformation and concomitant distortion, the suspension roll is provided with pleats extending across the roll suspension transversely to the direction of axial movement of the diaphragm to create a series of undulations (peaks and troughs) around the perimeter of the roll suspension. In transverse cross-section, the roll suspension is parabolic. The roll suspension varies continuously between each peak and adjacent trough. Preferably, outer surfaces of each peak and adjacent trough merge to a common point on the outer edge of the roll, while their inner surfaces merge to a common point on the outer edge of the roll, such that the peaks and troughs effectively disappear.

The invention relates to an enclosing purlin comprising a square steel pipe and light concrete for supporting a foundation pit. The enclosing purlin comprises the square steel pipe, light concrete, an end plate and support ribs, and replaces the original steel enclosing purlin, so as to reduce the consumption of steel material and cost. No cavity is formed in the light concrete, so as to enlarge partial rigidity and effectively avoid partial deformation; the end plate is used for sealing and connecting the enclosing purlin, so as to ensure better integrity of the whole support structure of the foundation pit; and the support ribs are used for preventing excessive deformation of a flange plate and prolonging the service life of the light concrete. During construction, a triangular bracket (small bracket) is erected, then an external member of the enclosing purlin is mounted, and finally, a steel bracing strut is erected and is connected with the enclosing purlin through the flange plate so as to be prevented from falling down. The enclosing purlin has the advantages of convenience in connection, high economical efficiency, reutilization, guaranteed rigidity, and excellent application value.

The buffer management algorithm of multipriority optimum dynamic threshold value is characterized in that when the lengths of all queues are less than the buffer resources, the threshold value of the quene with priority i is the max. of the sum of queues in each port with priority less than or equal to i, making the threshold of the queue with higher priority larger than the threshold of the queue with lower priority. When lengths of all queues are equal to or longer than the buffer resources, the threshold will be reduced according to the speed of the packet. The invention provides the features of taking full advantage of buffer resources, reducing the loss of the packets, allocating the resources according to the priority. Comparing with the dynamic threshold algorithm in prior art, the invention possesses better integrity.

The invention relates to a curable sealant composition broadly comprising a resealable, swellable, reactive sealant and free radical initiator; said resealable, swellable reactive sealant comprises monofunctional monomer(s), multifunctional monomer(s), reactive polymer such as unsaturated styrenic block copolymer, swellable additive, and optional components. The monofunctional monomer is a vinyl ester derivative of versatic acid with C9-C12 carbon atoms, or monoacrylate, monomethacrylate, monoacrylamide, or monomethacrylamide. The multifunctional monomer are di-, tri-, tetra-, and / or penta-functional monomers with vinyl, acrylate, methacrylate, acrylamide, or methacrylamide functionality, such as tricyclodecane dimethanol diacrylate, trimethylolpropane trimethacrylate, 1,3-butylene glycol dimethacrylate or a mixture thereof. The reactive unsaturated polymer is a styrenic block copolymer such as SBS, SIS, S-I / B-S, I-SEBS-I, and mixtures of two or more of these. The swellable additive is selected from saturated block copolymers such as SEBS, SEPS, SEEPS, and I-SEBS-I, or a mixture of these. Free radical initiators are preferably peroxides, although others are acceptable.

The invention discloses a feed pelletizing device with functions of grinding, screening and mixing raw materials. The feed pelletizing device comprises a base, wherein support plates are fixedly arranged on the left and right sides at the top of the base; a pelletizing bucket and a mixing box are fixedly arranged by virtue of brackets separately between the left support plate and the right supportplate; the pelletizing bucket is obliquely arranged toward the right lower corner; an electric push rod is fixedly arranged on the left wall in the pelletizing bucket; the push rod at the right end of the electric push rod is fixedly connected with an extrusion cylinder; the outer side wall of the extrusion cylinder is fit with the inner side wall of the pelletizing bucket and is in slip connection with the extrusion cylinder and the pelletizing bucket; an electric heating tray is fixedly arranged on the right side in the pelletizing bucket; and a plurality of left and right perforated pelletizing holes are formed uniformly in the electric heating tray. The feed pelletizing device is characterized in that the extrusion cylinder is driven by the electric push rod to extrude raw materials rightwards to enable the raw materials to pass through the pelletizing holes in the electric heating tray, thereby performing pelletizing; and the electric heating tray is electrified and heated duringpelletizing, so the surfaces of feed are gelatinized when the raw materials penetrate through the pelletizing holes, thereby ensuring better integrity of the feed, avoiding loosening and improving feed quality.

The invention discloses a method for extracting ribonucleic acid from blood. The method comprises the steps of adding a rapid cell lysis solution containing a cationic surfactant into whole blood sample, mixing uniformly and standing; carrying out a centrifugal separation after cleaning to remove a supernatant solution and retain precipitate; adding a high-ion-concentration purified ribonucleic acid solution to the precipitate, mixing uniformly and standing; carrying out a centrifugal separation, taking the centrifugally separated solution portion to obtain a ribonucleic acid solution. The method for extracting ribonucleic acid from blood disclosed by the invention is more efficient, rapid and simple and the separation of white blood cells is not carried out firstly. Compared with the prior art, ribonucleic acid with better integrity and higher purity can be obtained by the extraction method and the extraction method is more suitable for experiments, research and analysis on ribonucleic acid and related technologies.

A method performed with a computing system for determining well integrity includes receiving a selection of a well configuration of a well, and receiving a selection of a wellbore operation performed with the well configuration. The selected well configuration includes one or more casing strings and a production tubing extending from adjacent a wellhead of the well to adjacent a bottom of the well. In some examples, the method further includes determining, based on the well configuration and the wellbore operation, a characteristic of the well at or adjacent the one or more casing strings and the production tubing during the wellbore operation, and modifying the well configuration to remove the production tubing. In some examples, the method still further includes determining, based on the modified well configuration and the wellbore operation, the characteristic of the well at or adjacent the one or more casing strings during the wellbore operation.