我想使用bool查询是正确的方向，类似这样的方法应该可以：

localhost:9200/pictures/picture/_delete_by_query?pretty
{
    "query": {
        "bool": {
            "must": [
                {
                    "regexp":{
                            "tag": ".*something.*",
                            "path": "this/is/my/path",
                            "user_id": 2,

                        }
                    }               
                },
                {
                    "term": {
                        "path.keyword": "this/is/my/path"
                    }
                },
                {
                    "term": {
                        "user_id.keyword": 2
                    }               
                }
            ]
        }
    }
}